MM5620 64GT/s Dual DP3T Relay with Loopback Menlo Micro MM5620 64GT/s Dual DP3T Relay with Loopback supports the high-speed differential signal switching required in PCIe Gen 6, SerDes and other standards. This switch is based on Ideal Switch® technology and can operate at up to 64GT/s or 20GHz to meet the requirements of high-performance applications. Additional features include fast switching speed, low insertion loss and high reliability with over 3 billion switching cycles.