StarTech.com SFP (mini-GBIC) - 1 x LC Duplex 1000Base-LX/LH Network - 10 / Pack - Cisco GLC-LH-SMD Compatible SFP - 1000BASE-LX/LH 1 Gbps - 1GbE Module - 1GE Gigabit Ethernet SFP 1310nm - Single Mode (SMF)/Multi Mode (MMF) Transceiver - 10km (6.2 mi) - LC Connector DDM - Hot-Swappable & MSA Compliant - Lifetime Warranty