Our QSFP-DD loopback test adapters support NRZ 400 Gbps and PAM4 800 Gbps total data rate, as well as different power classes. They are available with an optional bicolor LED light indicating the operating power mode. Our QSFP-DD loopbacks are fully SFF compliant and provide a 2-wire serial communication interface for optimum temperature and voltage monitoring and memory map loading. Our test adapters are hot pluggable and thermally designed to operate between 0 ° to 70 °C (32 ° to 158 °F). A new high temperature version even operates at a temperature rate up to 125 °C (257 °F)

• Available as NRZ 400 Gbps and PAM4 800 Gbps version
• Optional diagnostic functions via LED (temp, voltage/load, comm)
• Extended plug cycle life
• Switchable power-classes 0 to 25W
• Monitoring functionality for system debugging
• Switchable low speed signal interface
• Different pull-tab color options