Alcatel-Lucent QSFP+ Module - For Data Networking, Optical Network - 1 x LC 40GBase-LR4 Network - Optical Fiber - 1264.5 nm, 1277.5 nm, 1284.5 nm, 1297.5 nm, 1304.5 nm, 1317.5 nm, 1324.5 nm, 1337.5 nm - Single-mode - 40 Gigabit Ethernet - 40GBase-LR46561.68 ft Maximum Distance: