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-transmits/receiver module (mini-GB