1、25Gbps Rate: This 25G SFP transceiver adopts LC single mode fiber, 25Gbps transfer rate, RX1550/TX1310 nm wavelength. 2、Hot Swap: This SFP single fiber optical module supports plug and play, hot swap. Thermal gasket provide superior heat dissipation. 3、Low Power Consumption: This SFP single fiber optical module features low power consumption, which is lower than 1 watt. Support DDM. 4、Durable Material: This SFP transceiver adopts premium zinc alloy material, which is ensures long service life. 40KM transmission distance. 5、Wide Application: This SFP single fiber optical module is suitable for optical fiber switch, routers, network adapters, servers, firewalls, and more. 1 x 1.25G SFP Transceiver Item Type: 1.25G SFP TransceiverMaterial: Zinc AlloyProduct Model: SFP GE LX40 SM1550 BIDIRate: 1.25GTransmission Distance: 40KMWavelength: TX1550 / RX1310nmApplicable Devices: Applicable to Fibre Switch, Router, and Network Card