The Finisar FTLF8536P4BCL-FC SFP28-25G-SR transceiver is a 25 Gbps Ethernet optical module in the SFP28 form factor, designed for short-reach links at an 850 nm wavelength. Dell lists this exact part as SFP28-25G-SR 850nm 25GbE, identifying it as the Dell variant of the Finisar FTLF8536P4BCL-FC. Suitable for data-center networking, it enables 25GbE connections between switches and servers that require a 25GBASE-SR interface.
