ATOP 100G QSFP28 CWDM4 transceiver is a 100G QSFP CWDM transceiver designed for use in 100 Gigabit Ethernet and Data Center Interconnect. It adopts 4x25G electrical interface and has a maximum power consumption of 3.5W. This transceiver supports 103.125Gb/s aggregate bit rate, which can up to 2km transmission on single mode fiber without FEC. Its operating case temperature is from 0℃ to 70℃, and the single power supply is 3.3V.