ExtremePort™ QSFP+ I/O Connector Systems Amphenol Commercial ExtremePort™ QSFP+ I/O Connector Systems consist of 38-position and 0.8mm pitch connectors built for high-speed serial applications. These I/O connectors support next-generation 200G+ applications and transmit up to 56Gb/s PAM4 per channel. The ExtremePort™ QSFP+ connectors feature a stamped and formed contact design that improves mechanical durability. These QSFP+ I/OP connectors feature backward compatibility with QSFP28 and meet CEI-56GPAM4 VSR requirements. The ExtremePort connectors are suitable for switches, routers, networked storage systems, data center networking, servers, external storage systems, and High-Performance Computing (HPC).