StarTech.com Cisco QSFP-40G-LR4 Compatible QSFP+ Module, 40GBASE-LR4, 40GbE SMF Optic Transceiver, 40GE Gigabit Ethernet LC Connector, 10km, 1270nm-1330nm, DDM, Cisco Firepower, ASR1000 - Lifetime Warranty (QSFP40GLR4ST) - QSFP+ transceiver module (equivalent to: Cisco QSFP-40G-LR4) - 40GbE - 40GBase-LR4 - LC single-mode - up to 10 km - 1270-1330 nm

The QSFP40GLR4ST is a Cisco QSFP-40G-LR4 compatible fiber transceiver module that has been designed, programmed and tested to work with Cisco brand switches and routers. It delivers dependable 40 GbE connectivity over fiber cable, for 40GBASE-LR4 compliant networks, with a maximum distance of up to 10 km (6.2 mi). This QSFP+ fiber module is hot-swappable, making upgrades and replacements seamless by minimizing network disruptions. StarTech.com offers a wide variety of SFP modules and direct-attach SFP cables, providing the convenience and reliability you need to ensure dependable network performance.