The 400G QSFP112 DR4 transceiver is designed for 0.5km optical communication applications and interconnection applications with digital diagnostics functions. The module converts 4 channels of 106.25Gb/s (PAM4) electrical input data to 4 channels of parallel optical signals, each channel of 106.25Gb/s operation for an aggregate data rate of 400Gb/s. An optical fiber cable with an MTP/MPO-12 connector can be plugged in to the 400G QSFP112 DR4 module receptacle. Support up to 0.5 km fiber transmission.