400G AOC (Active Optical Cable) is a high-speed fiber optic connector used in data centers and high-performance computing environments with transmission rates of up to 400 Gbps. 400G AOC offers higher transmission speeds and greater bandwidth than traditional 100G AOCs to meet the demands of higher-rate data transmission.

400G AOC cables usually use QSFP-DD package, each port contains 8 channels, each channel transmission rate of 50Gbps, the total transmission rate of 400Gbps This cable uses optical fiber as a transmission medium, through the photoelectric conversion of electrical signals into optical signals for transmission, so it has a longer transmission distance and higher anti-interference ability.