ATOP 400G QSFP-DD SR8 transceiver is high-quality 400G SR8 module designed for use in 2x 200G Ethernet 200GBase-SR4 links over multimode fiber. It enables a dense-port and high-throughput solution with its compact size and low power consumption. It can be used in various network applications, such as Internet protocol switches and routers. The maximum transmission distance is 100m on OM4 MMF. It is fully compliant with QSFP-DD MSA. Digital diagnostics functions are available via the I2C interface, as specified by the QSFP-DD MSA.