The 400G QSFP56-DD AOC is a Eight-Channel, Pluggable, Parallel, Fiber-Optic QSFP Double Density for 2x200 Gigabit Ethernet Applications. Our active optical cable assembly portfolio provides improved cable flexibility and longer reach as compared to both traditional passive copper and emerging active copper (ACC/AEC) solutions, supporting high performance computing, data center and networking interconnect applications. This active optical cable is compliant with IEEE 802. Each cable integrates eight transmit and eight receive channels operating at 53. 125 Gbps with PAM4 modulation for an. DOUBLE DENSITY, COST EFFICIENT, HIGH PERFORMANCE Amphenol QSFP DD to QSFP DD 200G Active Optical Cable assemblies increase the number of lanes from 4 to 8 and double the port density as compared to 100G QSFP28 AOC. These AOC assemblies are QSFP DD MSA compliant, also backwards port compatible with. 100% OEM Compatible, 400GBase, QSFP-DD to QSFP-DD AOC (Active Optical Cable) Tested. 100% Guaranteed compatible with multi-vendor AOC support 100% tested to exact MSA & OEM specifications Industry leading Limited Lifetime Warranty on all AOC products Extensive inventory. The 400G QSFP-DD active optical cables are designed for use in 400 Gigabit Ethernet links over OM4 multimode fibers, and contain eight multi-mode fibers (MMF) optic transceivers per end, each operating at data rates of up to 53Gb/s.