IC Intracom Transceiver Module Optical Gigabit Ethernet SFP Mini-GBIC 1000Base-Sx (LC) Multi-Mode Port 550m,MSA Compliant Equivalent to Cisco GLC-SX-MM Three Year Warranty Fiber optic 1000 Mbit/s SFP LC 50/125,62.5/125 µm 550 m