Dell Networking 100GbE QSFP28 SR4 Transceiver — MMF MPO-12, No FEC

The Dell Networking 100GbE QSFP28 SR4 transceiver is a hot-pluggable fiber optic module designed to deliver high-density 100 Gigabit Ethernet uplinks in data centers and enterprise networks. With an MPO-12 connector and a QSFP28 form factor, this SR4 transceiver provides four parallel 25 Gbps lanes, enabling true 100GbE links over multimode fiber up to 100 meters. Built to work seamlessly with Dell Networking switches, it offers a reliable upgrade path for expanding switch fabric capacity without sacrificing performance or reliability. Whether you’re refreshing a crowded rack, upgrading spine-leaf fabrics, or strengthening intra-data center connectivity, this transceiver is engineered for dependable, plug-and-play operation in Dell environments.

• High-density 100GbE SR4 solution: Four parallel 25 Gbps lanes (4x25G) deliver a true 100GbE link, optimized for short-reach data center deployments over multimode fiber (MMF). This architecture preserves switch fabric bandwidth, reduces cabling complexity, and integrates smoothly with spine-leaf designs to scale performance while minimizing latency and power consumption.
• QSFP28 hot-pluggable form factor: Easily swap or upgrade transceivers in Dell switches with no heavy downtime, minimizing service interruptions. The hot-pluggable design supports in-service maintenance, rapid provisioning, and streamlined lifecycle management for busy data centers and enterprise networks.
• MPO-12 multimode fiber interface: Designed for wideband multimode fiber cabling, enabling robust, scalable uplinks with clean, high-bandwidth transmission. MPO-12 compatibility aligns with standard fiber harnesses, enabling tidy cabling and flexible patching across racks and cabinets.
• MMF compatibility up to 100 m: Supports up to 100 meters on OM3/OM4 fiber, making it ideal for intra-data center links and top-of-rack deployments. This reach supports most enterprise and data-center topologies while preserving signal integrity across the link.
• No FEC capability: This module does not implement forward error correction, so your network design should rely on your switch’s FEC capabilities or choose a transceiver with FEC if required for your environment. This helps keep the module compact and cost-efficient while delivering high performance where FEC is managed at the system level.

Technical Details of Dell Networking, Transceiver, 100GbE QSFP28 SR4, No FEC Capable, MPO, MMF

• Transceiver type: QSFP28 SR4 multifiber transceiver (Dell Networking compatible) designed for high-density 100GbE uplinks.
• Data rate: 100 Gigabit Ethernet using four 25 Gbps lanes (SR4), optimized for short-reach multimode fiber applications.
• Fiber type: Multimode fiber (MMF); recommended for OM3/OM4 cabling to maximize reach and performance within the 100 m specification.
• Connector interface: MPO-12 (12-fiber ribbon) for high-density fiber assembly and simplified cabling in data centers.
• Distance: Up to 100 meters on standard MMF cabling; performance depends on fiber quality, connector integrity, and patch panel losses.
• FEC support: No forward error correction (FEC) capability built into the module; FEC is typically implemented by the switch or fabric layer as needed.
• Form factor: QSFP28 hot-pluggable module; compatible with Dell EqualLogic, PowerConnect, and other Dell networking switches that support QSFP28 SR4 uplinks.
• Compliance: Compliant with QSFP28 MSA standards and Dell hardware compatibility guidelines; RoHS compliant and designed for data center environments.

How to install Dell Networking, Transceiver, 100GbE QSFP28 SR4, No FEC Capable, MPO, MMF

• Verify compatibility: Confirm that your Dell Networking switch and QSFP28 port support 100GbE SR4 transceivers and MMF fiber. Check the device’s compatibility matrix and ensure the uplink port is configured for 100GbE/ SR4 operation.
• Prepare the fiber cabling: Use high-quality multimode fiber with MPO-12 connectors (MTP/MPO). Ensure fibers are clean, undamaged, and properly terminated at both ends. Use a clean patch cord and connectors to prevent insertion losses.
• Static protection and handling: Ground yourself and use ESD protection when handling the transceiver. Hold the module by its edges and avoid touching the optical surfaces or contact pins.
• Insert the transceiver: Align the QSFP28 module with the switch’s uplink port and insert it firmly until it seats with a click. Do not apply excessive force; if it does not seat, remove and reseat carefully.
• Connect the fiber: Attach an MPO-12 MMF fiber patch cord between the transceiver and the corresponding patch panel or another QSFP28 port. Route the fiber to minimize bending and maintain clean corner radii to preserve signal integrity.
• Power and verify: If your device requires power cycling, perform a controlled restart. After insertion, verify link status via front-panel LEDs or management software. Run basic connectivity tests (pings, throughput tests) to confirm 100GbE SR4 connectivity.
• Troubleshooting: If you do not see a link, reseat the transceiver, inspect the fiber for damage or contamination, check fiber polarity, and confirm that both ends are configured for the same SR4/100GbE settings.

Frequently asked questions

• Q: What does SR4 mean in this Dell transceiver? A: SR4 stands for short-reach 4-lane operation, using four 25 Gbps signals to deliver a true 100GbE link over multimode fiber. It is intended for intra-data center deployments with MMF cabling up to 100 meters, depending on fiber grade and patching.
• Q: Is the transceiver compatible with non-Dell switches? A: While the module is designed to Dell QSFP28 SR4 specifications, it can interoperate with other equipment that supports QSFP28 SR4 and MPO-12 MMF interfaces. Always verify the target device’s compatibility matrix and whether FEC or other link-level features are required.
• Q: What fiber type should I use? A: Multimode fiber (MMF) is required for SR4 links. Use OM3 or OM4 fiber to maximize reach and bandwidth; OM4 generally offers better performance with higher tolerance to bending and longer distance in some installations.
• Q: Does this transceiver include FEC? A: No. The transceiver itself does not implement forward error correction; FEC is typically handled by the switch or fabric controller if needed for your deployment’s reliability requirements.
• Q: Can I use this transceiver for longer distances? A: The listed distance is up to 100 meters on MMF. For longer distances, you would typically use a different transceiver type (such as LR4) that is designed for single-mode fiber or longer MMF runs.
• Q: How do I know I’m selecting the right Dell part? A: Look for the Dell Networking, QSFP28 SR4, MMF MPO-12 designation and verify the SKU/UPC with your procurement or Dell catalog. Always cross-check the compatibility with your switch model and the intended fiber infrastructure.