UniF Aggregation Switch Pro
Four 25GbE SFP28 ports
Twenty-eight 10GbE SFP+ ports
760Gbps switching capacity
Layer 3 switching features
Color touchscreen status display
In this guide
25GbE switches with SFP28 ports are built for networks that need more headroom than 10GbE can provide while preserving the flexibility of modular fiber uplinks. They suit high-density servers, advanced storage, virtualization clusters, media workflows, and modern enterprise access layers. The right model balances port speed, switching capacity, management, congestion control, and physical design.
We compared the ten supplied products by examining their documented port layouts, supported speeds, management capabilities, rack-mountability, and intended workloads. The list includes switches with native 25GbE SFP28 connectivity as well as several multi-gigabit or lower-speed alternatives. That distinction is important because only certain products directly satisfy a strict SFP28-focused requirement.
Each review explains where the switch is strongest, where its specification set falls short, and which networks should consider it. The top selections favor purpose-built 25GbE platforms, while other entries provide useful context for buyers balancing SFP28 against 2.5GbE, 10GbE, or legacy connectivity. Prices and availability can change, so verify current listings and port details before purchasing.
Top 3 Picks for Best 25GbE Switches with SFP28 Ports
QNAP QSW-M7230-2X4F24T-US
Four native 25GbE SFP28 ports
Two 100GbE QSFP28 uplinks
Layer 3 Lite web management
PFC and ECN congestion support
Twenty-four 10GbE RJ45 ports
Cisco N9K-C93180YC-EX
5.0Editor score
Forty-eight 25GbE SFP+ ports
Six 100GbE QSFP28 uplinks
3.6Tbps switching capacity
Cut-through switching architecture
Modular data center design
Top 10 Best 25GbE Switches with SFP28 Ports in 2026 Compared
The comparison highlights each model's 25GbE availability, uplink options, management depth, and physical format. Several listings do not actually include 25GbE SFP28 ports, so they are best understood as adjacent multi-gigabit alternatives rather than direct matches.
ProductsSpecificationsEditor scorePrice
Editor's Choice
QNAP QSW-M7230-2X4F24T-US
Four 25GbE SFP28 ports
Two 100GbE QSFP28 uplinks
Twenty-four 10GbE RJ45 ports
Layer 3 Lite managed
Editor's Choice
TRENDnet TEG-S50284
Twenty-four 2.5GbE RJ45 ports
Four 10G SFP+ ports
120Gbps switching capacity
One-unit rack mount
4.8Editor score
Best Premium
Cisco Nexus N9K-C92160YC-X
Forty-eight 25GbE SFP28 ports
Six 100GbE QSFP28 ports
Dual AC power
Renewed enterprise hardware
MikroTik CRS520-4XS-16XQ-RM
Twenty-four 25GbE SFP28 ports
Four 100GbE QSFP28 ports
Two 2.5GbE ports
Four gigabytes DDR4 RAM
4.6Editor score
UniF Aggregation Switch Pro
Four 25GbE SFP28 ports
Twenty-eight 10GbE SFP+ ports
760Gbps switching capacity
Fully managed Layer 3
Dell PowerSwitch N3224P-ON
Four 25GbE SFP28 ports
Two 100GbE QSFP28 ports
PoE++ access ports
Managed three-layer platform
TRENDnet TEG-3284WS
Twenty-four 2.5GbE ports
Four 10GbE SFP+ ports
Web smart management
VLAN and QoS support
3.4Editor score
MikroTik CRS518-16XS-2XQ-RM
Sixteen SFP+ ports
Two QSFP28 ports
650MHz processing
64MB device memory
4.5Editor score
Cisco N9K-C93180YC-EX
Forty-eight 25GbE SFP+ ports
Six 100GbE QSFP28 ports
3.6Tbps switching capacity
Sub-microsecond latency
5.0Editor score
D-Link DGS-1210-28
Twenty-four Gigabit Ethernet ports
Four Gigabit SFP ports
Layer 2+ managed
Fanless rack-mount design
4.4Editor score
1. QNAP QSW-M7230-2X4F24T-US – Best Overall 25GbE SFP28 Switch
QNAP QSW-M7230-2X4F24T-US
Four 25GbE SFP28 ports
Two 100GbE QSFP28 ports
Twenty-four 10GbE RJ45 ports
Layer 3 Lite management
The QNAP QSW-M7230-2X4F24T-US is a purpose-built 25GbE SFP28 switch designed for modern data center and high-bandwidth infrastructure. Its most compelling combination is four 25GbE SFP28 ports, two 100GbE QSFP28 uplinks, and twenty-four 10GbE RJ45 access ports. No numeric user rating was supplied, but the documented feature set makes it the most flexible match for this guide's core requirement.
Pros
- Native 25GbE SFP28 connectivity
- Fast 100GbE backbone uplinks
- RoCE-oriented congestion features
- Useful web-based management
- Flexible copper and fiber mix
Cons
- No published user rating
- Only four SFP28 server ports
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Its appeal lies in how it bridges different tiers of infrastructure. The 10GbE copper ports can connect servers and workstations without requiring fiber throughout the rack, while the SFP28 ports serve 25GbE-capable systems. The 100GbE QSFP28 uplinks create a path toward higher-capacity backbones, which is especially relevant to AI clustering, large NAS deployments, enterprise storage, and virtualization environments.
Network management is also notably deeper than a basic unmanaged switch. The web GUI supports IPv4 and IPv6 static routing, VLANs, QoS, and bandwidth control. For demanding east-west traffic, Priority Flow Control and Explicit Congestion Notification can help reduce packet loss and bottlenecks, particularly in RoCEv2-oriented deployments. These are valuable features when latency, congestion, and traffic prioritization matter more than simply adding ports.
The main limitation is that only four ports operate natively at 25GbE, so buyers with many 25GbE servers should model uplink and downstream requirements carefully. The rack-oriented design may also be overkill for a small office. Even so, organizations wanting a manageable, mixed-speed aggregation layer should give this QNAP strong consideration.
A Balanced Copper-and-Fiber Architecture
Twenty-four 10GbE RJ45 ports make the QNAP useful beyond dedicated fiber clusters. Installers can connect compatible copper-based servers while reserving the SFP28 and QSFP28 interfaces for higher-speed links, helping create a staged migration toward 100GbE networking.
Congestion Control for High-Speed Fabrics
PFC and ECN support are particularly relevant for RoCEv2 and other loss-sensitive workloads. These mechanisms help identify and manage congestion instead of allowing a single busy flow to degrade performance across the switch.
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2. TRENDnet TEG-S50284 – Flexible Multi-Gigabit Access Switch
TRENDnet TEG-S50284
Twenty-four 2.5GbE ports
Four 10GbE SFP+ ports
120Gbps switching capacity
Rack-mountable metal housing
The TRENDnet TEG-S50284 is a strong multi-gigabit access switch, but it is not a direct 25GbE SFP28 solution. It combines twenty-four 2.5GbE RJ45 ports with four 10GbE SFP+ ports and a stated 120Gbps switching capacity. Its 4.8 user rating is among the strongest supplied, which may appeal to buyers prioritizing an established customer response and practical access-layer design.
Pros
- Highly rated by users
- Broad 2.5GbE access
- Four 10GbE fiber uplinks
- Smart fan control
- Rack mounting kit included
Cons
- No native 25GbE SFP28
- Limited management feature detail
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The twenty-four copper ports can deliver multi-gigabit connectivity over Cat5e or better cabling, making the switch relevant to offices, studios, small server rooms, and branch networks that want to upgrade access links without running fiber to every endpoint. Four 10GbE SFP+ ports provide high-speed network connections and a path toward fiber uplinks, although those interfaces top out below the 25GbE speed sought in the keyword.
Its physical design suits network cabinets. The one-unit, 19-inch rack-mountable metal housing includes a mounting kit, while smart fans adjust their speed according to cooling needs. IEEE 802.1Q VLAN passthrough is supported, and TRENDnet lists lifetime manufacturer protection, English-speaking technical support, and NDAA and TAA compliance for eligible government buyers in the United States and Canada.
This is the right choice for a buyer who interprets the category broadly and prioritizes 2.5GbE access plus 10GbE uplinks. It is not the right choice when a server requires a native FP28 link at 25GbE. View it as a complement to the dedicated 25GbE choices rather than a substitute for them.
Practical Upgrade for Existing Copper
Supporting 2.5GbE over Cat5e or better lets organizations improve many access links without immediately replacing structured cabling. It is a sensible path for offices handling large file transfers, collaboration traffic, and growing wireless backhaul demands.
Rack-Ready Physical Design
The included mounting kit and one-unit metal enclosure make the switch easier to deploy in a cabinet. Smart fan behavior also provides a practical way to balance cooling requirements with unnecessary power and noise.
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3. Cisco Nexus N9K-C92160YC-X – High-Density Enterprise SFP28 Choice
Cisco Nexus N9K-C92160YC-X
Forty-eight 25GbE SFP28 ports
Six 100GbE QSFP28 ports
Dual AC power supplies
Professionally refurbished
The renewed Cisco Nexus N9K-C92160YC-X brings exceptional 25GbE port density to a compact enterprise switch. Its documented title identifies forty-eight 25GbE SFP28 ports and six QSFP+/QSFP28 ports, along with dual AC power. No numeric customer rating was supplied, so the strongest evidence comes from the platform's port density and enterprise-oriented configuration.
Pros
- Very high 25GbE port density
- Six high-speed QSFP28 uplinks
- Dual AC power configuration
- Enterprise Nexus platform
- Professionally inspected hardware
Cons
- Renewed-condition purchasing risk
- Accessories may not be original
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For organizations connecting dozens of modern servers, the difference between four and forty-eight 25GbE ports can be decisive. The switch can act as a concentrated high-speed access layer without distributing 25GbE interfaces across several chassis. The QSFP+/QSFP28 uplinks also support a tiered topology, allowing the switch to feed larger aggregation or backbone systems.
The renewed designation deserves careful attention. Amazon-qualified vendors are stated to have professionally inspected, tested, and cleaned the pre-owned product. Accessories may not be original, however, and the item may arrive in generic packaging. Buyers should therefore review the listing, included components, return terms, and physical condition before committing.
This Cisco is well suited to experienced administrators who understand Nexus platforms and can validate compatibility for their virtualization, storage, and data center environment. It is less attractive for small offices or first-time switch buyers because the dense enterprise layout and refurbished status increase deployment complexity and uncertainty.
Exceptional Server-Port Concentration
Forty-eight native 25GbE SFP28 ports make this model suitable for high-density racks. Consolidation reduces the number of separate switches and cabling paths needed for storage, compute, and virtualization nodes.
Redundant Power and Uplink Scale
Dual AC power and six high-speed uplink positions support resilient data center designs. They also create room for multiple backbone connections when aggregate traffic exceeds a single server-facing link.
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4. MikroTik CRS520-4XS-16XQ-RM – High-Speed Routing and Switching Platform
MikroTik CRS520-4XS-16XQ-RM
Twenty-four 25GbE SFP28 ports
Four 100GbE QSFP28 ports
Two 2.5GbE interfaces
Quad-core 2GHz ARM CPU
The MikroTik CRS520-4XS-16XQ-RM is a performance-oriented enterprise switch with twenty-four 25GbE SFP28 ports, four 100GbE QSFP28 ports, and two 2.5GbE interfaces. Its 4.6 rating indicates generally favorable user reception, while the CCR-series processor, 4GB of DDR4 RAM, and quad-core 2GHz ARM CPU suggest that this model is built for more than basic packet forwarding.
Pros
- Strong processor specification
- Twenty-four SFP28 server ports
- Four 100GbE uplink positions
- Generous four-gigabyte memory
- Enterprise-oriented port density
Cons
- Configuration demands router expertise
- Management details are limited
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The port distribution is particularly effective for high-bandwidth server aggregation. Twenty-four SFP28 interfaces can serve compute or storage nodes, while four QSFP28 ports lead toward 100GbE infrastructure. The additional 2.5GbE interfaces provide useful flexibility for management or compatible access connections, although they are not a substitute for higher-speed server ports.
MikroTik's greatest attraction for many technical buyers is control and flexibility. Its advanced configuration model can appeal to administrators who want a capable routing and switching platform rather than a fixed appliance profile. The tradeoff is that buyers unfamiliar with RouterOS or complex switch configurations may need to invest more time in initial design, monitoring, and troubleshooting.
The MikroTik is best for technically confident organizations seeking a dense 25GbE platform with strong processing resources. Verify the exact transceiver and cabling requirements for your servers and switches, and test the intended configuration before putting it into a critical production path.
Processing Headroom for Demanding Traffic
The quad-core ARM processor and four gigabytes of memory provide a stronger foundation than a basic access switch. Those resources can support sophisticated routing, filtering, inspection, and other advanced configurations when configured appropriately.
Purposeful 25GbE Server Density
Twenty-four SFP28 ports let the switch handle a substantial group of 25GbE endpoints in one chassis. Four QSFP28 uplinks keep the server-facing layer connected to a much faster aggregation tier.
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5. UniF Aggregation Switch Pro – Premium Managed Aggregation Platform
UniF Aggregation Switch Pro
Four 25GbE SFP28 ports
Twenty-eight 10GbE SFP+ ports
760Gbps switching capacity
565.44Mpps forwarding rate
The UniF Aggregation Switch Pro is a premium, fully managed Layer 3 platform that combines twenty-eight 10GbE SFP+ ports with four 25GbE SFP28 ports. Its 760Gbps switching capacity and 565.44Mpps forwarding rate position it as an aggregation switch rather than a simple access model. No numeric user rating was supplied, so the documented capacity, interface mix, and management experience are the key buying considerations.
Pros
- Polished UniFi management interface
- Strong 760Gbps switching capacity
- Layer 3 aggregation capabilities
- Built-in color touchscreen
- Remote power-failure protection
Cons
- Only four 25GbE ports
- Mixed-speed SFP28 restriction
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UniFi users benefit from a color touchscreen that displays system and connection information, plus web and mobile application management. The switch is designed to make a powerful Layer 3 aggregation layer approachable without requiring a separate console for routine monitoring. It is rack-mountable and can be monitored or configured remotely through the UniFi Network application.
Power resilience is another strength. The switch supports enhanced power-supply failure protection when paired with the separately sold SmartPower Redundant Power System. That makes it suitable for installations where a single power interruption should not disable the aggregation layer. The enclosure uses steel, and the listed maximum power consumption is 100W.
One important configuration caveat concerns the SFP28 ports. They do not support mixed speeds while operating at 25Gbps; once one port is configured at 25Gbps, the others are limited to that mode. Mixed operation is available only when all four are set to 1Gbps or 10Gbps. Buyers should confirm that shared behavior fits the planned topology.
Management That Extends Beyond the Rack
The UniFi web application and mobile app allow administrators to monitor and configure the switch from anywhere with network access. The built-in 1.3-inch color touchscreen adds quick local visibility for status and connection insights.
Layer 3 Aggregation with Headroom
With 760Gbps switching capacity and Layer 3 features, the switch is built to consolidate fast access links into a structured aggregation tier. It is well matched to modern campuses, studios, and distributed enterprise environments using UniFi.
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6. Dell PowerSwitch N3224P-ON – PoE-Enabled Enterprise SFP28 Option
Dell PowerSwitch N3224P-ON
Four 25GbE SFP28 ports
Two 100GbE QSFP28 ports
PoE++ access connections
Three-layer managed switching
The Dell PowerSwitch N3224P-ON combines four 25GbE SFP28 ports with two 100GbE QSFP28 uplinks, managed three-layer switching, and PoE++ access connectivity. That combination gives it a distinct role: it can aggregate high-speed servers while also supporting edge devices that need both network data and power.
Pros
- Native 25GbE SFP28 ports
- High-speed 100GbE uplinks
- PoE++ for edge devices
- Managed three-layer capability
- Modular one-unit rack design
Cons
- Only four SFP28 ports
- High stated power consumption
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The switch includes ten-capable twisted-pair access connections as part of its multi-speed PoE++ mix, along with the four high-speed SFP28 interfaces. Its 1U rack-mountable enclosure and modular design suit data center and enterprise cabinet installations where a broad power and networking feature set is needed.
The listed 944W power consumption figure warrants attention in capacity planning. PoE deployments can require considerably more power than conventional office switching, and adding a high-speed data center platform makes careful environmental and electrical design essential. Administrators should verify available rack power, cooling, and redundancy requirements.
This Dell model is most compelling where an organization needs both 25GbE server aggregation and PoE++ at the access edge. Its four-port SFP28 count is modest compared with dense Cisco and MikroTik alternatives, but the 100GbE uplinks and integrated power capabilities make it a serious mixed-workload platform.
PoE++ Meets High-Speed Networking
PoE++ expands the switch beyond conventional data transport. It can support compatible powered endpoints while the same chassis handles 25GbE SFP28 server links and 100GbE backbone connections.
Power Planning for Dense Installations
The stated 944W consumption makes electrical capacity a central buying consideration. Operators should account for both switch load and connected PoE devices, then reserve appropriate rack power for maintenance and future growth.
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7. TRENDnet TEG-3284WS – Web-Managed Multi-Gig Consolidation
TRENDnet TEG-3284WS
Twenty-four 2.5GbE ports
Four 10GbE SFP+ ports
Web smart management
Cloud service optional
The TRENDnet TEG-3284WS is a web-smart multi-gigabit switch with twenty-four 2.5GbE RJ45 ports and four 10GbE SFP+ ports. Its 3.4 rating is the lowest supplied among the products with numeric ratings, so buyers should investigate the current listing and reviews rather than assuming it offers the same experience as the better-rated TRENDnet model.
Pros
- Extensive managed feature set
- Remote cloud management option
- Broad 2.5GbE access
- Useful monitoring capabilities
- TRENDnet lifetime protection
Cons
- No native 25GbE SFP28
- Lowest supplied user rating
- Cloud service may add fees
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On the positive side, the TEG-3284WS provides a substantial management feature set for an access-focused design. The documented interface includes access control lists, VLAN support, IGMP snooping, QoS, RMON, SNMP trap, and syslog. An easy-to-use web GUI combines accessibility with the management depth required for segmentation, monitoring, and traffic control.
Remote management through TRENDnet's HIVE-enabled cloud service broadens its appeal for distributed installations, although the additional fee may apply. The switch also supports 2.5GbE over existing Cat5e or better wiring, which can simplify upgrades in offices and branch locations. Lifetime manufacturer protection and government-oriented compliance claims add further value where procurement standards matter.
The decisive limitation is that its fiber ports support 1Gbps or 10Gbps rather than 25Gbps. It therefore does not meet a strict native 25GbE SFP28 requirement. Consider it for consolidated multi-gigabit access and remote management, not for direct 25GbE server connectivity.
Management Depth for Smaller Teams
ACLs, VLANs, QoS, IGMP snooping, RMON, SNMP traps, and syslog provide a useful operational toolkit. These tools allow administrators to segment traffic, monitor behavior, and respond to network events without relying on a full-size enterprise operating system.
Cloud Monitoring for Distributed Sites
HIVE cloud service support can simplify remote configuration, monitoring, and diagnosis across multiple locations. Buyers should confirm service availability, subscription terms, and organizational privacy requirements before depending on it.
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8. MikroTik CRS518-16XS-2XQ-RM – Compact QSFP28 Routing Switch
MikroTik CRS518-16XS-2XQ-RM
Sixteen SFP+ ports
Two QSFP28 ports
650MHz processor
64MB device memory
The MikroTik CRS518-16XS-2XQ-RM is identified as a rack-mountable cloud router switch with sixteen SFP+ ports, two QSFP28 ports, a 650MHz processor, and 64MB of memory. Its 4.5 rating indicates positive user sentiment, although the supplied listing information is sparse and does not provide the deeper operating-system feature details seen for several other models.
Pros
- Positive 4.5 user rating
- Compact router-switch format
- QSFP28 uplink capability
- Flexible routing platform
- Rack-mountable model
Cons
- No native 25GbE specification
- Limited supplied product details
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The QSFP28 uplink positions make this an interesting platform for networks that want faster backbone links without moving to a large enterprise chassis. Sixteen SFP+ ports can support a variety of access, server, and interconnect roles depending on the installed transceivers. As a router switch, it may also appeal to administrators seeking combined routing and switching functions.
Its primary caveat is that the available information does not identify native 25GbE SFP28 operation. It should therefore be compared with the dedicated 25GbE models only when the requirement can be relaxed or when its QSFP28 uplinks are the principal consideration. Verify the current port capabilities and transceiver compatibility because the supplied data is limited.
The MikroTik is most appropriate for technically capable users comfortable designing its configuration. It could serve a compact aggregation role, but buyers seeking a straightforward 25GbE server switch should favor the CRS520 or another model whose 25GbE support is explicitly documented.
High-Speed Uplinks in Compact Format
Two QSFP28 interfaces offer a path toward high-capacity backbone connections. The chassis can provide useful aggregation without occupying as much rack space as a dense multi-module enterprise platform.
Confirm Native 25GbE Before Purchase
The available information emphasizes QSFP28 rather than 25GbE SFP28 server ports. Buyers must distinguish a high-speed uplink interface from native 25GbE access and verify exact transceiver behavior before finalizing a design.
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9. Cisco N9K-C93180YC-EX – High-Performance Refurbished Data Center Switch
Cisco N9K-C93180YC-EX
Forty-eight 25GbE SFP+ ports
Six 100GbE QSFP28 ports
3.6Tbps switching capacity
Less than one-microsecond latency
The Cisco N9K-C93180YC-EX combines forty-eight fixed 10/25-Gbps SFP+ ports with six fixed 100-Gbps QSFP28 ports. It carries a perfect 5.0 supplied rating and is backed by a documented 3.6Tbps switching capacity, making it an impressive high-performance option for data centers, high-performance computing, and large-scale virtualization.
Pros
- Perfect 5.0 supplied rating
- Very high port density
- Exceptional switching capacity
- Cut-through low-latency design
- Hot-swappable power and fans
Cons
- Renewed hardware condition
- Requires suitable data center airflow
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Its cut-through architecture is designed for latency below one microsecond. VXLAN support enables scalable network virtualization, while Cisco ACI provides a framework for automating and managing physical and virtual networks. The switch also supports Cisco NX-OS, giving experienced administrators a familiar and comprehensive enterprise operating environment.
Availability features include hot-swappable power supplies and fans, redundant power, and a modular design intended to simplify upgrades and maintenance. Back-to-front airflow suits specific data center rack arrangements, so airflow direction must be matched with the cabinet and neighboring equipment to avoid thermal problems.
This renewed listing offers a way to obtain an enterprise platform at a substantially different acquisition point from a new unit, but condition and support should be confirmed. It is an excellent high-performance choice for organizations already equipped for Nexus-class infrastructure and able to validate the refurbishment details.
Low-Latency Data Center Architecture
Cut-through switching and sub-microsecond latency target demanding east-west traffic. These characteristics are especially relevant to clustered compute, large storage systems, and virtualized environments where delays can affect application responsiveness.
Automation and Virtualization Support
ACI and VXLAN support give the switch a modern network-virtualization framework. They help administrators build scalable overlay networks and coordinate physical and virtual resources through a centralized automation approach.
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10. D-Link DGS-1210-28 – Quiet Gigabit Access-Layer Switch
D-Link DGS-1210-28
Twenty-four Gigabit Ethernet ports
Four Gigabit SFP ports
Layer 2+ smart management
Fanless rack-mount design
The D-Link DGS-1210-28 is a 28-port Gigabit smart managed switch with twenty-four RJ45 ports and four SFP combo ports. Its 4.4 rating indicates generally positive user reception. Although it lacks the SFP28 and 25GbE speed required by the main keyword, it remains a capable access-layer option for offices, branch networks, and surveillance installations.
Pros
- Quiet fanless operation
- Broad traffic-management features
- Useful security controls
- ONVIF surveillance support
- Lifetime warranty coverage
Cons
- No 25GbE SFP28 support
- Only gigabit fiber uplinks
- Limited for modern server aggregation
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Its Layer 2+ feature set includes VLAN support, QoS, bandwidth control, port mirroring, link aggregation, spanning tree, IGMP snooping, and static routing. Security features include access control lists, 802.1X with RADIUS, ARP spoofing prevention, and D-Link Safeguard Engine. These controls make it more flexible than an unmanaged switch while remaining approachable through a web interface.
The fanless design supports silent operation and energy efficiency, and the switch complies with IEEE 802.3az for reduced power consumption. A special surveillance mode detects ONVIF-compliant devices and optimizes their video traffic, while cable diagnostics can help simplify troubleshooting. The rack-mountable enclosure and lifetime warranty add practical value for business installations.
Its defining limitation is speed. The four optical ports operate at gigabit levels, not 25GbE, and the copper ports are also limited to Gigabit Ethernet. Choose this model for reliable, quiet, managed access rather than for 25GbE servers or high-bandwidth storage fabrics.
Quiet and Energy-Conscious Operation
The fanless enclosure suits offices, studios, and branch spaces where noise would be disruptive. IEEE 802.3az energy-efficiency support also helps reduce unnecessary power consumption across a large installed base.
Practical Layer 2+ Control
VLANs, QoS, link aggregation, port mirroring, and IGMP snooping cover the essentials of a managed access network. Static routing and ACL capabilities extend the switch beyond basic unmanaged plug-and-play behavior.
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Buying Guide – How to Choose the Best 25GbE Switches with SFP28 Ports
The most important starting point is whether you genuinely need native 25GbE server access, a high-speed aggregation uplink, or merely a faster multi-gigabit access switch. Port counts, transceiver compatibility, congestion handling, management depth, physical design, and environmental requirements should be evaluated before comparing listings.
Confirm Native 25GbE Support
A product title that mentions SFP28 or QSFP28 does not necessarily provide the exact server-facing interface and speed you need. Some switches have QSFP28 uplinks but no 25GbE SFP28 access ports, while others use SFP+ cages capable of 10Gbps or 25Gbps. The QNAP, MikroTik CRS520, Dell N3224P-ON, UniF Aggregation Switch Pro, and Cisco N9K-C93180YC-EX have explicitly documented 25GbE SFP28 or 25GbE SFP+ interfaces. The TRENDnet, D-Link, and MikroTik CRS518 choices do not directly meet that requirement.
Always confirm the port's maximum line rate and transceiver form factor before buying. Native 25GbE support is essential for servers and workstations that require that exact speed; a high-speed uplink alone may not provide usable 25GbE connectivity to the endpoint.
Balance Server Ports and Uplinks
Server-facing port density determines how many high-speed systems can be connected without spreading them across multiple switches. Four-port designs can suit smaller clusters, while 24- or 48-port models serve dense racks. Uplink capacity must also match the aggregate traffic generated by the server ports. Six 100GbE QSFP28 uplinks, for example, provide considerable aggregation headroom, but the exact forwarding and switching figures should be checked against expected peaks.
Choose enough 25GbE ports for immediate needs while leaving room for future expansion. Then ensure the uplinks and switch fabric can carry the combined workload rather than selecting on server-port count alone.
Verify Transceiver and Cable Compatibility
SFP28 cages can accept different transceiver types, but the switch, optic, cable, and endpoint must agree on the physical layer and supported speed. The UniF Aggregation Switch Pro has a particularly important documented restriction: its four SFP28 ports do not support mixed speeds in 25Gbps mode, and configuring one at 25Gbps limits the others to that mode. Other systems may have separate constraints for 1Gbps, 10Gbps, and 25Gbps operation.
Make a compatibility checklist covering connector form factor, supported media, reach, temperature requirements, and endpoint compatibility. This is especially important when mixing server NICs, storage arrays, optics, and direct-attach cables from different vendors.
Evaluate Switching Capacity and Latency
Line-rate port speeds tell you what an individual connection can support, while switching capacity indicates how much aggregate traffic the platform can move. The UniF model lists 760Gbps switching capacity and 565.44Mpps forwarding, the Cisco N9K-C93180YC-EX lists 3.6Tbps, and the TRENDnet TEG-S50284 lists 120Gbps. For dense data center fabrics, throughput and forwarding rate should be evaluated alongside latency and oversubscription assumptions.
Avoid treating a headline capacity figure as proof of performance in every traffic pattern. Consider packet sizes, port combinations, congestion controls, queue behavior, and whether your busiest flows could converge on fewer uplinks than the server-facing layer.
Choose the Right Management Depth
Layer 3 Lite management may be sufficient for static IPv4 and IPv6 routing, VLAN segmentation, QoS, and basic bandwidth control. Fully managed platforms add broader automation, visibility, virtualization, and operational tools. The UniF model offers web and mobile application management with a local touchscreen, the Cisco supports NX-OS, ACI, and VXLAN, and the MikroTik CRS520 provides substantial processing resources for advanced configuration. The two TRENDnet products are more access-focused, with the TEG-3284WS providing web-smart features and optional cloud management.
Match the operating environment to the skill set you actually have. Sophisticated control can improve flexibility, but it also increases the importance of configuration backups, monitoring, documentation, and a clear recovery plan.
Assess Congestion and Traffic Control
At 25GbE, a fast link can still be overwhelmed by loss-sensitive traffic. The QNAP includes Priority Flow Control and Explicit Congestion Notification, features intended to reduce packet loss and manage congestion in demanding high-speed transmissions, including RoCEv2-oriented workloads. VLANs, QoS, traffic prioritization, and access controls remain important on every model, even when advanced lossless functions are absent.
For storage, AI, or high-performance computing fabrics, determine whether the protocol and devices expect particular congestion-control behavior. Do not assume that a high port speed alone will prevent loss, buffer exhaustion, or application stalls under heavy east-west traffic.
Plan for Rack Space and Power
Rack-mountability is useful, but chassis size, airflow direction, cooling, and power draw determine whether a switch fits its intended environment. The TRENDnet TEG-S50284 includes a one-unit mounting kit, while the Dell N3224P-ON lists a 1U form factor and 944W power consumption. The Cisco N9K-C93180YC-EX specifies back-to-front airflow, making cabinet and neighboring-device compatibility important.
Include transceiver power, connected PoE loads, rack PDU capacity, spare outlets, cooling requirements, and redundancy in the installation plan. A technically capable switch can still be a poor deployment choice if the physical environment cannot support it safely.
Account for Condition and Support
Refurbished enterprise hardware can provide access to advanced platforms at a different acquisition cost, but condition and included accessories must be reviewed. The renewed Cisco N9K-C92160YC-X is stated to have been professionally inspected, tested, and cleaned by Amazon-qualified vendors, while accessories may not be original and packaging may be generic. TRENDnet products list lifetime manufacturer protection, and the D-Link includes a lifetime warranty, whereas other support terms should be confirmed directly.
Check return policies, warranty documentation, support channels, operating-system licensing, and the availability of compatible components. These practical factors can matter as much as raw throughput once a switch enters production.
How to Use and Care for Your 25GbE Switches with SFP28 Ports
Begin with a written port map that separates server access, storage traffic, management traffic, and network uplinks. Confirm every planned cable, transceiver, and endpoint supports the intended speed and media type. Before moving equipment into a live rack, test the configuration in a controlled environment, document each link, and verify that redundant paths behave as intended.
Install the switch in accordance with its airflow and clearance requirements, connect protective grounding where applicable, and make sure nearby equipment does not obstruct cooling. Organize fiber leads carefully to avoid sharp bends and physical stress. After initial configuration, create backups of the running configuration and maintain a separate record of critical settings, VLAN mappings, routing information, firmware versions, and transceiver details.
Operate the switch by reviewing utilization, errors, congestion, temperature, power status, and port health on a regular schedule. Update management software or firmware only after checking release notes and compatibility guidance. Keep spare optics and compatible cables for critical links, but label every spare so it can be deployed without guesswork. For redundant power, redundant uplinks, or high-availability fabrics, periodically test failover rather than assuming it works.
Frequently Asked Questions
What is the difference between an SFP28 switch and a QSFP28 switch?
SFP28 typically provides one 25GbE optical or copper link per interface, while QSFP28 is a quad-format form factor commonly used for 100GbE links or breakout configurations. The exact behavior varies by switch, so an SFP28 or QSFP28 label alone does not guarantee every supported speed. Check the manufacturer's port documentation and transceiver compatibility list.
Does every switch in this guide provide native 25GbE ports?
No. The QNAP, MikroTik CRS520, Dell N3224P-ON, UniF Aggregation Switch Pro, and Cisco N9K-C93180YC-EX have explicitly documented 25GbE SFP28 or SFP+ connectivity. The TRENDnet models offer 2.5GbE and 10GbE, while the D-Link is a Gigabit access switch. Those alternatives may suit adjacent needs but do not satisfy a strict 25GbE requirement.
How many 25GbE ports should a server rack switch have?
The correct count depends on the number of high-speed endpoints, expected traffic concentration, uplink capacity, and room for expansion. Four ports may be enough for a small cluster, while 24 or 48 ports can simplify dense racks. Uplinks must also be capable of carrying the aggregate server traffic without becoming the limiting element.
Can I use Cat5e or Cat6 cabling for 25GbE?
That depends on the specific devices, transceiver technology, cable length, and installation standard. Multi-gigabit access over Cat5e or better is supported by the TRENDnet products for speeds up to 2.5Gbps, but that does not automatically mean every Cat5e installation can carry 25GbE. Use manufacturer guidance for the exact port and cable combination.
Do I need advanced congestion control for a 25GbE network?
It depends on the traffic. Conventional web, office, and many storage transfers can work well without specialized lossless behavior, while AI fabrics, some storage protocols, and high-volume east-west traffic may benefit from PFC, ECN, or equivalent controls. The QNAP explicitly documents PFC and ECN, making it especially relevant to RoCEv2-oriented designs.
Are refurbished enterprise switches suitable for production use?
They can be, provided the buyer reviews condition, inspection details, warranty, included accessories, and return terms. The renewed Cisco N9K-C92160YC-X is described as professionally inspected, tested, and cleaned, although accessories may not be original. Validate the unit, run burn-in tests, and align the purchase with organizational procurement and support requirements.
What management features should I look for in a managed SFP28 switch?
Look for VLANs, IPv4 and IPv6 routing where needed, QoS, traffic monitoring, access controls, configuration backups, and alerting. Full-featured platforms may add VXLAN, centralized automation, mobile or web applications, and detailed telemetry. Choose a level of control that matches your team's expertise and operational requirements.
How should I verify compatibility before ordering transceivers?
Create a checklist using the switch's port documentation, supported media list, firmware requirements, and transceiver specifications. Confirm speed, reach, connector, encoding, temperature range, and power requirements, then verify that the connected endpoint accepts the same optic or supported cable. This prevents expensive mismatches that may only appear after installation.
Final Thoughts on Choosing the Best 25GbE Switches with SFP28 Ports
The QNAP QSW-M7230-2X4F24T-US is the most balanced overall option because it combines four native 25GbE SFP28 ports, two 100GbE QSFP28 uplinks, twenty-four 10GbE access ports, Layer 3 Lite management, and congestion-control features. The UniF Aggregation Switch Pro stands out as a premium managed platform with 760Gbps switching capacity and a polished monitoring experience, while the Cisco N9K-C93180YC-EX delivers exceptional density and performance through forty-eight 25GbE-facing ports and six 100GbE uplinks.
Prioritize native 25GbE support first, then match the number of server-facing ports, uplink bandwidth, management features, and physical environment to the network. Congestion control matters most in demanding fabrics, while quiet operation, PoE, or cloud monitoring may shape access-layer decisions. Several products in the broader list do not include 25GbE, so they should be considered adjacent alternatives rather than strict SFP28 solutions.
Before purchasing, verify the current listing, transceiver compatibility, port-speed rules, warranty terms, accessory contents, and electrical requirements. Prices and product availability can change, and refurbished hardware should be evaluated carefully. Checking those details against the intended network design is the most reliable way to select a switch that will remain useful as demand grows.