StarTech.com Cisco GLC-LH-SM Compatible SFP Module, 1000BASE-LX/LH, 1GbE SMF Optic Transceiver, LC Connector, 10km, 1310nm Cisco Firepower, ASR920, IE2000 Mini GBIC Transceiver 1GE SFP

Lifetime Warranty (GLCLHSM10PST) - SFP (mini-GBIC) transceiver module (equivalent to: Cisco GLC-LH-SM) - 1GbE - 1000Base-LX, 1000Base-LH - LC - up to 10 km - 1310 nm (pack of 10)