EASY to USE -Plug-n-Play.Hot swap-ability ensures your network always stays up. DURABLE DESIGN - Built with a high-quality metallic design, support widely temperature range -22?to 149? or -30 ? to 65?, suitable for harsh working environments. DDM(Digital Diagnostic Monitoring) - Real-time monitoring of module status, quickly find the fault location, improve system stability. COMPATIBILITY- Compatible with Cisco and other Open Switches: D-Link, Supermicro, Netgear, Fortinet, TP-Link and Ubiquiti UNIFI Switches. 1.25G SFP MODULE- 1.25Gbps SFP Optical Transceiver, Dual LC single-mode fiber, 1310nm, up to 20km super long distance transmission for POE switch with SFP uplinks.