Features: 1.25Gbps Rate: 1.25Gbps rate, T1310/R1550 single fiber single mode, up to 40KM transmission distance, with advanced DDM function, can monitor real time parameters and status on the fiber link. SFP MSA compliant, IEEE 802.3z compliant. 2.Hot Swap: To hot swap, rotate the rings fastener down to unlock, then pull the transceiver out of the switch. Less than 1.05W power dissipation and thermal pads provide superior heat dissipation. 3.Low Power Consumption: Power consumption is only less than 1 watt, which can save cost wisely. 40KM transmission distance, 1310nm working wavelength. 4.Wide Compatibility: Compatible with most brands of equipment, widely used in fiber optic switches, routers, network cards, servers, firewalls or other fiber optic equipment with 1.25Gb SFP ports. 5.Strict Testing: All products are produced under strict quality control system, and each module is tested one by one on different switches before leaving the factory to ensure compatibility with switches of different brands. specification:Item Type: 1.25G SFP Fiber Optic Module Material: Zinc Alloy Product Model: SFP GE LX40 SM1310 Speed: 1.25G Transmission Distance: 40KM Working Wavelength: 1310nm Applicable Equipment: Widely Used in Fiber Optic Switches, Routers, Network Cards, Servers, Firewalls or Other Fiber Optic Equipment with 1.25Gb SFP Ports PackageList:1 x 1.25GSFPFiberOpticModule