Cisco QDD-400-AOC7M 400G QSFP-DD Active Optical Cable, 7M | Data Center

When short-reach 400G links need a little more distance, the Cisco QDD-400-AOC7M provides a practical answer. This active optical cable is built for QSFP-DD ports and supports 7 m runs, giving teams more freedom in rack placement, pathway design, and equipment spacing without moving to a heavier copper solution. The value of active optical cabling becomes clear in dense environments. It helps keep cable bundles manageable, supports cleaner airflow, and reduces the routing friction that can slow down deployment in high-speed fabrics. For leaf-spine architectures, adjacent row connections, and tightly packed switching layers, the 7 m reach offers extra flexibility while preserving the clean signal characteristics expected from optical transport. Cisco’s model designation matters for organizations that standardize on known components and want consistency across procurement, staging, and operations. If your design calls for 400G connectivity with more reach than a 5 m assembly can provide, this cable gives you the added margin without sacrificing the disciplined cable management that modern data centers demand.