40G QSFP+ series optical Transceiver modules, including 2km~10km single-mode optical fiber transmission, comply with 40G Ethernet IEEE 802.3BA, 40GBASE standard, QSFP+ MSA protocol requirements, and support hot pluggability. The data rate of each channel is up to 11.2Gbps. The four CWDM channels MUX/DEMUX are designed for medium and long distances over single mode fiber (SMF). The modules are RoHS compliant.  Mainly used in 40G Ethernet highspeed wireless and data center interconnections.