Startech Cisco SFP-25G-LR-S Compatible SFP28 Module, 25GbE Single Mode Fiber (SMF), 1310nm Tx/Rx, LC Connector, 10km (6.2mi), MSA-Compliant

25GBASE-LR, 25 Gigabit Optical Transceiver, DDM/DOM Support (SFP-25G-LR-S-C-ST) - SFP28 transceiver module (equivalent to: Cisco SFP-25G-LR-S) - 25GbE - 25GBase-LR - LC single-mode - up to 10 km - 1310 nm