200G QSFP56 FR4S Transceiver PAM4 CWDM4 lanes MUX/DEMUX Design 2km 1271nm 1291nm 1311nm 1331nm LC SMF 2km with FEC DDM1 Description The 200G InfiniBand HDR QSFP56 FR4 Transceiver Module is designed for 200GBASE Ethernet link up to 2km over single mode fiber (SMF) using a wavelength of 1271nm to 1331nm with duplex LC connectors. The module supports four electrical interface channels and operates in 50G PAM4 coding mode, resulting in 200G (4x50G) data rates. It is compliant with IEEE 802. 3cd, IEEE 802. 3bs, QSFP56 MSA, SFF 8665, SFF 8024 and SFF 8679 standards. The