The YXF-QP-M85L-01D is a four-channel pluggable LC duplex QSFP+ fiber optic transceiver for 40 Gigabit Ethernet applications. The Cisco ® 40GBASE QSFP (Quad Small Form-Factor Pluggable) portfolio offers customers a wide variety of high-density and low-power 40 Gigabit Ethernet connectivity options for data center, high-performance computing 00networks, enterprise core and distribution layers, and service provider. 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. Trusted by 260K+. BiDi modules are transceivers that can send and receive at the same time over one fiber cable using two wavelengths. This full-duplex allows both directions without requiring a separate fiber for receiving. It works at near-infrared wavelengths of 850 nm, 1310 nm, and 1550 nm, and supports 10GE, FICON10G, SONET OC-192, STM-64, and OTU2.