Deliver 400G connectivity across a 5 m run with an active optical cable designed for Arista-compatible infrastructure. The QSFP-DD to 4 x QSFP56 breakout format is built for environments that need to distribute a high-speed uplink into multiple 100G endpoints without adding unnecessary complexity to the rack. This cable is a practical fit for leaf-spine fabrics, aggregation layers, and high-density server zones where port planning matters as much as raw bandwidth. The optical construction helps keep cable bundles lighter and easier to manage than equivalent copper options, which is especially valuable when airflow, bend radius, and serviceability are part of the design standard. For procurement teams, the value is in matching the right interconnect to the right topology. This TAA-compliant assembly is aimed at deployments that require compatibility, reach, and a clean breakout path from one 400G port to four 100G links. It is a focused choice for teams that want to preserve switch density while extending usable connectivity across the rack.