Manufacturer : Cisco Manufacturer Part : GLC-ZX-SMD Product Description : Cisco - SFP (mini-GBIC) transceiver module - 1 Gbps Device Type : SFP (mini-GBIC) transceiver module - LC/PC single mode Form Factor : Plug-in module Cabling Type : 1000Base-ZX Data Transfer Rate : 1 Gbps Optical Wave Length : 1550 nm Data Link Protocol : Gigabit Ethernet Max Transfer Distance : 43.5 miles Dimensions (WxDxH) : 0.5 in x 2.2 in x 0.3 in Weight : 2.6 oz Manufacturer Warranty : 90 days warranty Designed For : Cisco 2, 20, 2520, 40, 5760, 8; ASR 901; ASR 9000 Route Switch Processor; Catalyst 3560, 3750, 4500, 4948; Catalyst Compact 3560; Industrial Ethernet 2000, 3000, 3010; Line Card Classic, E-Series; ME 3400, 3600, 3600X 24, 3800, 3800X 24; MWR 2941; Nexus 7000; Supervisor Engine 6, 6L, 7, 7L, 8 For more info : https://adsii.ca/cisco-products/cisco-transceiver/cisco-sfp-modules/glc-zx-smd.php