1Optical fiber transceiver, low loss and longer transmission distance. 2Super heat dissipation, plug and play, durable to use, long service life. 3Transmission rate is 10/100/1000Mbps, and optical port rate is 1.25G. 4Suitable for intelligent broadband, optical fiber wiring, and security monitoring. 5SC fiber interface type, transmission distance is about 3km, stable performance. Item Type: Ethernet Media Converter Material: Iron Model: XXS-SFP-1F1G/XXS-SFP-1F2G Power Supply: DC5V/DC(5V/12V) Purpose: Intelligent broadband, optical fiber wiring, security monitoring, enterprise layout Optical Interface: SC Optical Port Rate: 1.25G Transmission Rate: 10/100/1000Mbps Transmission Distance: 3km 1 x XXS-SFP-1F1G Transceiver 1 x XXS-SFP-1F2G Transceiver Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.