The 400G QSFP112 SR4 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 multi-mode fiber. It is a small-form- factor hot pluggable transceiver module integrated Optical Extinction Ratio 2.5 dB with high performance VCSEL. It is compliant with 400G Ethernet specs and QSFP112 MSA.