The 400G QSFP112 LR4 Transceiver is designed to transmit and receive serial optical data links up to 106.25 Gb/s data rate (per channel) by PAM4 modulation format over single-mode fiber. It is a small-form- factor hot pluggable transceiver module integrated with high performance EML laser. It is compliant with 400G Ethernet specs; QSFP112 MSA.