Features: 1.Single Fiber Single Mode: This SFP transceiver ensures 1.25Gb/s rate. Tx1310/Rx1550 single fiber single mode. 20KM transmission distance. Support DDM function. Compliant with SFP Multi Source Agreement standard, IEEE 802.3Z 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 1.25 GBIT/s SFP ports. 3.Plug and Play: This SFP optical transceiver supports plug and play, hot swap, Power consumption of less than 1.05W 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. specification:Item Type: SFP Transceiver Material: Zinc Alloy Color: Silver Rate: 1.25G Transmission Distance: 20KM Working Wavelength: 1310nm Interface: LC Applicable Equipment: For Huawei, for ZTE, for H3C, for Cisco, for RIGOAL, for HP and Other Switches, Routers, Firewalls, Network Cards and Other Equipment PackageList:1 x SFP Transceiver 1 x Dustproof Plug