1000BASE-SX Optical module, 1.25G bps SFP Mini -GBIC, Multi-mode 850nm LC duplex connector DDM 550m transceiver module, Commercial Temperature Range 0 to 70C (32 to 158F) ^^ 1GB SFP Module Compatible with Fortinet-Network 1.25 Gigabit Ethernet 1000BASE-SX standards (coding as Fortinet FN-TRAN-SX ) ^^ Protocols MSA Compliant, SFF-8472 and IEEE 802.3 ah-2004 with duplex LC receptacle ^^ Hot Pluggable SFP MSA and RoHS Compliant to Maximize Uptime and Simplify Maintenance