Cisco QDD-400-AOC20M 400G QSFP-DD Active Optical Cable, 20 m | Fiber Optic

Keep 400G links stable across longer intra-row and rack-to-rack distances with Cisco’s QSFP-DD active optical cable. The 20 m reach gives network teams more placement flexibility when switches, servers, and storage arrays cannot sit in adjacent racks. Because the optics are integrated into the cable assembly, you avoid the added complexity of separate transceivers and fiber patching at both ends. This cable is a strong fit for high-density environments where cable management, airflow, and port accessibility matter as much as throughput. It helps reduce front-of-rack congestion compared with bulky copper alternatives, while supporting a cleaner path for maintenance and future expansion. For infrastructure teams standardizing on 400G interconnects, an AOC can be a practical choice when you need predictable performance over a fixed distance and want to keep the install simple. Use it where short-reach 400G transport must remain tidy, serviceable, and consistent. Cisco-branded integration also makes it easier to align procurement with enterprise support expectations and reduce compatibility risk in mixed-vendor environments.