850nm 1/2.5-Gbps Optical SFP Transceiver. Support 1 or 2.5Gbps. Provides Gigabit Ethernet up to 550 meters over Multimode fiber, using a 850nm laser. Provides LC fiber connectors. For use with NetVanta 2nd Gen 1534, 1st Gen 1544, 2nd Gen 1544/1544F, and 1600 SFP Module.