1、Single Fiber Single Mode: This SFP transceiver ensures 25Gb/s rate. Tx1310/Rx1550 single fiber single mode. 20KM transmission distance. Support DDM function. Compliant with SFP Multi Source Agreement standard, IEEE 803Z standard. 2、Wide Application: This SFP single fiber optical module is widely used in optical fiber switch, routers, network adapters, servers, firewalls, and other fibre channel devices with 25 GBIT/s SFP ports. 3、Plug and Play: This SFP optical transceiver supports plug and play, hot swap, Power consumption of less than 05W and thermal spacer provide superior heat dissipation. 4、High Reliability: Every module has been tested one by one on different switches before shipping, to ensure compatibility with different brand of switch. 5、Zinc Alloy: This SFP transceiver is made from premium zinc alloy material, which is sturdy and highly durable. 1 x SFP Transceiver1 x Dustproof Plug  Item Type: SFP TransceiverMaterial: Zinc AlloyColor: SilverRate: 1.25GTransmission Distance: 20KMWorking Wavelength: 1310nmInterface: LCApplicable Equipment: For Huawei, for ZTE, for H3C, for Cisco, for RIGOAL, for HP and Other Switches, Routers, Firewalls, Network Cards and Other Equipment