The 400G QSFP56-DD AOC is a Eight-Channel, Pluggable, Parallel, Fiber-Optic QSFP Double Density for 2x200 Gigabit Ethernet Applications. 400G AOC Cables from JTOPTICS are Active Optical Cables that offer lightweight, flexible, and low-power connectivity. Designed for high-performance computing and networking environments, they enable fast data transfers with reduced electromagnetic interference. Amphenol is a leading innovator in the development and manufacturing of Active Optical Cables (AOCs), delivering high-performance interconnect solutions. 100% OEM Compatible, 400GBase, QSFP-DD to QSFP-DD AOC (Active Optical Cable) Tested. 6T/800G down to legacy links, our optics are.