▓ Measurement results demonstrate robust 50G/lane PAM-4 operation over: ▓ IEEE Std. 802.3bj 100GBASE-CR4 compliant 3m 30AWG Direct-Attach Copper cable used for Server to TOR connections ▓ Optical fibers linking the TOR, aggregation and core switches ▓ IEEE Std. 802.3bj 100GBASE-KR4 compliant backplane + connector solution typically found within layer-3 core switches and/or edge routers. ▓ 80km DWDM Data Center Interconnect