StarTech.com Cisco GLC Connector LX-SM-RGD Compatible SFP Module, 1000BASE-LX, 1GbE Single Mode Fiber Optic Transceiver, LC Connector, 10km 1310nm, DDM, Cisco Firepower, ASR920, IE2000

Lifetime Warranty (GLCLXSMRGDST) - SFP (mini-GBIC) transceiver module (equivalent to: Cisco GLC-LX-SM-RGD) - GigE - 1000Base-LX - LC single-mode - up to 10 km - 1310 nm