Features 4 channels full-duplex transceiver modules Transmission data rate up to 28Gbps per channel Support 40GE and 56G FDR data rate 4 channels 850nm VCSEL array 4 channels PIN photo detector array Internal CDR circuits on both receiver and transmitter channels Support CDR bypass Low power consumption: QSFP28- 100G < 2.5W and QSFP28-50G