StarTech.com Cisco QSFP-40GE-LR4 Compatible QSFP+ Module - 40GBase-LR4 Fiber Optical Transceiver
CISCO QSFP-40GE-LR4 COMP
TECHNICAL SPECS: 40GBASE-LR4 | 40 Gbps | Single Mode (SMF) | LC Connector | 1270nm to 1330nm 100% CISCO QSFP-40GE-LR4 COMPATIBLE: Works with Cisco switches like C4500, N7000, N7700, N9300, N9500 and others