Dell Networking 25GbE SFP28 SR Transceiver — No FEC, MMF, Duplex LC

The Dell Networking 25GbE SFP28 SR Transceiver is a compact, high-performance module designed to elevate data-center connectivity with reliable short-range fiber links. Built to meet the demanding needs of modern networks, this transceiver delivers robust 25 Gbps performance over multimode fiber (MMF) using a duplex LC connector. With 25GBASE-SR signaling, it is ideal for server-to-switch uplinks, top-of-rack deployments, and inter-rack communications, enabling scalable, low-latency data transfer for virtualization, cloud services, and high-density computing environments. This module emphasizes efficiency and reliability, featuring a hot-swappable form factor that makes it easy to upgrade or expand your network without downtime, while maintaining compatibility with a broad range of Dell Networking switches and blades. The “No FEC” configuration is suitable for networks where optical link budgets are favorable and error correction can be managed at higher levels of the stack, allowing for streamlined operation and reduced processing overhead where appropriate. In short, the Dell Networking 25GbE SFP28 SR Transceiver is a trusted choice for data centers seeking to optimize intra-building fiber links with a compact, enterprise-grade solution.

• The 25GbE SFP28 SR transceiver supports 25 gigabit-per-second data transfer using the SFP28 form factor, delivering high-throughput uplinks for modern servers and storage systems. Its SR designation denotes a short-range multi-mode fiber link, making it ideal for within-rack and between-rack deployments in data centers and enterprise networks. With a compact, hot-swappable design, this module integrates into Dell Networking switches and blades without requiring extensive downtime or cabling changes, enabling rapid scaling as your network grows. The transceiver’s ability to carry 25GBASE-SR traffic over MMF ensures low-latency performance for latency-sensitive workloads such as virtualized environments, dense database operations, and high-performance computing clusters. By leveraging the SFP28 interface, it provides a straightforward upgrade path from 10GbE or 40GbE interfaces, simplifying migration and future-proofing your investment.
• Designed for reliability and long-term operation in data-center environments, the transceiver uses a robust MMF optical path and a Duplex LC connector to ensure stable, high-quality signal transmission. The SR designation indicates a short-range, high-bandwidth link suitable for intra-floor or adjacent-rack connections, which are common in modern data centers that emphasize low power consumption and minimal footprint. The module is built to Dell’s stringent compatibility standards, ensuring dependable performance with Dell Networking switches and related hardware. Its no-FEC configuration is intended for networks with sufficient optical margin, where forward error correction may be unnecessary or handled at the firmware or software layer. In practice, this translates to a leaner data path with fewer processing steps, potentially reducing latency and power use while maintaining data integrity within the model’s design parameters.
• Fiber type and connector compatibility are tailored for MMF environments, using 850 nm laser technology to transmit data across standard multimode fiber. The duplex LC interface makes fiber termination straightforward and widely compatible with common data-center fiber infrastructure. This combination supports a practical balance between distance, cost, and performance, enabling efficient uplink connections from servers to top-of-rack switches or spine-leaf fabrics. Data-center operators often deploy OM3 or OM4 MMF for SR links, benefiting from higher modal bandwidth and reduced attenuation. This transceiver aligns with those practices, delivering predictable performance and simplifying cable management in dense deployments where space and air-flow considerations are critical.
• Power efficiency, thermal design, and rugged construction are key advantages of this transceiver. Its compact form factor, combined with Dell’s engineering standards, contributes to dependable operation in rack-mmount environments. The no-FEC configuration, while relying on favorable optical margins, helps minimize overhead and processing requirements, which can translate into slightly lower latency in some workloads. This makes the transceiver a suitable choice for latency-sensitive applications such as real-time analytics, streaming services, and high-velocity data ingestion. In enterprise deployments, dependable link stability and a straightforward installation process mean fewer troubleshooting steps and more consistent network performance across complex topologies.
• Deployment versatility and total cost of ownership are compelling reasons to consider this transceiver for Dell Networking ecosystems. Whether upgrading existing infrastructure, expanding a spine-leaf fabric, or consolidating server-to-network uplinks, the 25GbE SFP28 SR module provides a scalable path that aligns with modern IT goals. Its MMF-based SR solution supports efficient data-center operations, enabling higher server port density without sacrificing performance or reliability. By combining a compact, hot-swappable design with robust optics and a straightforward installation path, this transceiver helps IT teams maximize uptime, streamline cabling, and achieve better return on investment through improved bandwidth and reduced network latency across the campus or data-center environment.

Technical Details of Dell Networking, Transceiver, 25GbE SFP28 SR, No FEC, MMF, Duplex LC

• Standard: 25GBASE-SR
• Form factor: SFP28
• Fiber type: MMF (multimode fiber)
• Connector: Duplex LC
• Wavelength: 850 nm
• Reach: Short-range (SR) – optimized for intra-data center links over MMF
• FEC: No FEC
• Data rate: 25 Gbps
• Compatibility: Designed for Dell Networking switches and related Dell networking hardware that support SFP28 SR transceivers
• Operating considerations: Hot-swappable, designed for data-center-grade reliability and standard optical margins

how to install Dell Networking 25GbE SFP28 SR Transceiver

Installing the Dell Networking 25GbE SFP28 SR transceiver is straightforward and designed to minimize downtime. Before installation, verify that your Dell switch or blade supports SFP28 modules and that your fiber infrastructure aligns with the transceiver’s MMF, fiber grade (OM3/OM4) and connector type. Power down is not always required if your device supports hot-swapping, but consult your specific chassis or switch documentation to confirm hot-plug capabilities. With the switch ready, follow these steps to install the transceiver:

• Hold the transceiver by its body and align it with the SFP28 slot on the Dell Networking device. Make sure the module faces the correct direction, with the label oriented for easy identification. Insert the transceiver firmly into the slot until it seats with a click. Do not force the module; if it does not seat smoothly, remove and reinsert to ensure proper alignment.
• Connect the MMF fiber cable to the duplex LC connectors on the transceiver. Ensure the fibers are clean and free of dust or debris. Gently push the ferrules into the LC connectors until you feel a secure seat. Avoid excessive bending of the fiber and maintain an appropriate bend radius to preserve signal integrity.
• Power on the device if required, or observe the port status if hot-plugging is supported. Check the port LEDs on the switch to confirm that a link has been established and that the transceiver is operating in its intended mode. A steady green link LED typically indicates a successful connection, while amber or no LED may require inspection of fiber alignment, notch seating, or compatibility checks with the other end of the link.
• Verify the link and rate. Use your switch’s management interface or command-line tools to confirm a 25GbE link on the corresponding port. Run a quick throughput test using a suitable traffic generator or built-in test utilities to ensure the connection sustains the expected 25 Gbps data rate without errors. If you encounter errors, re-seat the module, re-check fiber termination, and verify that the opposite end of the link is also compliant with 25GBASE-SR.
• Document the installation for future reference. Record the transceiver's part number, firmware compatibility, installation slot, and the fiber type used (OM3/OM4) to facilitate future maintenance, upgrades, or replacements. Regularly review compatibility lists from Dell to ensure continued reliability as firmware updates and hardware revisions occur, helping to maintain optimal performance across your network.

Frequently asked questions

• What is the Dell Networking 25GbE SFP28 SR Transceiver used for? It is a short-range, high-speed optical transceiver designed to provide 25 Gbps connectivity over multimode fiber with a duplex LC interface. It is commonly deployed for server-to-switch uplinks, top-of-rack connections, and inter-rack links within data centers to support high-bandwidth workloads and virtualization environments.
• Does this transceiver support FEC (Forward Error Correction)? No. This model is labeled No FEC, which is suitable for networks with sufficient optical margin or where FEC is managed at other layers. If your deployment requires FEC, verify compatibility with your switch firmware and consider a transceiver that explicitly supports FEC.
• What fiber type and connector are used? The transceiver uses multimode fiber (MMF) with a duplex LC connector, designed for short-range optical links and typical data-center MMF installations such as OM3 or OM4 fiber types.
• Is it hot-swappable? Yes. The SFP28 transceiver is designed for hot-swapping on compatible Dell Networking switches, allowing you to upgrade or replace modules without powering down the entire system, minimizing downtime and improving maintenance efficiency.
• What kind of devices is this transceiver compatible with? It is intended for use with Dell Networking switches and related Dell networking hardware that support SFP28 SR modules. Always consult the latest Dell compatibility matrix or vendor docs to confirm model-by-model compatibility before purchase.
• What distances can I expect with SR on MMF? SR transceivers are optimized for short-range links within data centers. Distances can vary by fiber type (OM3/OM4) and quality of the link, but you can expect reliable performance for intra-rack and intra-building connections where the optical budget supports 25 Gbps without requiring longer-haul capabilities.
• How do I install and verify the transceiver? Insert the module into an SFP28 slot, connect a clean MMF duplex LC fiber, power up or verify hot-plug capability, and check the port status for a stable 25GbE link. Run a brief throughput test to confirm performance and monitor for any link errors or alarms in your switch management interface.