Spirent A1 400G 16-Port Appliance is the industry’s highest density QSFP-DD platform with 16 400GbE ports per 2U high appliance, offering 2x density advantage for QSFP-DD from nearest competitor. The appliance can be configured to support per port (PAM4) 400/200/100/50GbE and (NRZ) 200/100/50/40/25/10GbE encoding, to validate the next generation of routers and data center fabrics.