T1-QSFP-40G-SR-BD is a four-channel, pluggable, LC Duplex, fiber-optic QSFP+ transceiver for 40 Gigabit Ethernet applications. FS 40G QSFP+ optical transceiver module solutions offer a full range of QSFP+ modules from 150m to 80km reach, and used for high-density switching, routing and data center applications. It uses a clever bidirectional communication setup over a single. QSFP-40G-SR-BD is a 40G QSFP+ BiDi transceiver designed for short-reach connectivity over duplex multimode fiber using LC connectors. It complies with the 40G Ethernet transmission protocol.