Application-It's able to use on all Cisco 1000BASE-LX 1.25Gigabit Ethernet 1G SFP Module for switches, Servers, Routers, NICs and other transmission equipment for Enterprise LAN Networks in data center and other cooper networking connections. Wide Compatible-Dependently for Open Sources brand,including Ubiquiti, Netgear, Brocade E1MG-LX-OM , Unifi, Finisar FTLF1319F1XTL , Mikrotik, Trendnet, TP-link and Dlink DEM-310GT, Zyxel, Trendnet, Supermicro, Qnap, Linksys etc. 1.25G SFP LX-1000BASE-LX/LH 1.25Gbps 1G SFP Module Mini-GBIC, Single Mode, sm, 1310nm ,10km max distance 20km@SMF, 550m@MMF, full duplex LC Hot pluggle, auto-negotiation, low power consumption, operation temperature range for 0 to 70°C (23 to 158°F). Support Digital Diagnostic Monitoring (DDM) , MSA compliant. 100% Compatible-Independently for Cisco Brand Gigabit Ethernet 1000BASE-LX standards, EEPROM data coding and writing to Cisco GLC-LH-SMD GLC-LH-SM SFP-GE-L.