The SONT 400G QSFP-DD DR4(DM7P4-FD5C) optical transceiver is an Eight-Channel electrical, Four-Channel optical, pluggable, single mode fiber, QSFP-DD transceiver for 400 Gigabit Ethernet applications. It converts 8 host electrical data lanes in each direction at 53.125Gbps into 4 optical lanes at 106.25Gbps. An optical fiber cable with a MPO-12 connector can be plugged into the module receptacle. Proper alignment is ensured by the guide pins inside the receptacle. The cable usually cannot be twisted for proper channel to channel alignment. It allows communication up to 500m over single mode optical fiber cable. These modules are designed to operate over single mode fiber systems using 1310nm wavelength. This high performance transceiver module is intended for medium-range SMF data communication and interconnect applications.