Cisco 25GBASE-SL SFP28 Transceiver Module, 850 nm Multimode

Short links inside a rack or between neighboring racks are what the Cisco 25GBASE-SL SFP28 Transceiver Module, part number SFP-25G-SL, targets. It operates at 850 nm over multimode fiber at 25GbE, with a rated reach of 20 m on OM3 and 30 m on OM4 or OM5.

Those distances are shorter than a standard short-reach 25GbE module, so this one belongs in dense layouts where runs are measured in a few meters. Check the grade of fiber you have installed, because the OM3 and OM4/OM5 figures differ.

The module is an SFP28 form factor with one port. It fits SFP28 cages in switches and server adapters, and host platforms vary in which modules they accept, so check the supported-optics information.

Because optical modules are paired, make sure the other end of the link uses a compatible module and that the fiber and connectors match what the module expects. Confirm the connector type against your cabling.

The SFP-25G-SL is offered new, refurbished and used. New and refurbished modules carry 1 year or 3 years of warranty, and used modules carry 90 days. Send the quantity and platform with your request.