Cisco - QSFP+ transceiver module - 40GbE - 40GBase-LR4 - LC single-mode - up to 10 km - 1271 nm / 1291 nm / 1311 nm / 1331 nm - for Cisco 1, 2; Nexus 56128, 5672, 6001, 93XX, 93XXX, X9432, X9464, X9536, X9564, X9636, X9736