QSFP56 (Quad Small Form-Factor Pluggable 56) is a 4-lane form factor standard supporting 200G (4×50G) connectivity using PAM4 modulation. It doubles the bandwidth of QSFP28 while maintaining mechanical compatibility, enabling high-density networking for AI/ML clusters and HPC systems. NADDOD's 200G. FS offers a growing portfolio of 200/400/800G/1. 6T optical transceiver modules and cables. 30-Day Free. The adoption of 200G/lane optical links in data centers lays the groundwork for the eventual deployment of 1. Our 2 x 100G modules use Duplex CS connectors, boasting a 40 percent size reduction from Duplex LC.