Preserve 400 GbE performance across short interconnects with an active optical cable designed for demanding data center fabrics. This 3 m assembly connects QSFP56-DD to OSFP112 endpoints, giving infrastructure teams a clean path between Arista and NVIDIA Mellanox-compatible systems without the bulk and bend constraints of copper at this speed. Active optical cabling is a strong fit when port density, cable management, and signal quality are all under pressure. Compared with passive alternatives, this format helps maintain reliable high-speed transport over a compact run while keeping rack layouts easier to service. That matters in GPU clusters, spine-leaf networks, and storage-adjacent compute where every connection must support sustained throughput. The TAA-compliant designation also makes this cable easier to specify in regulated procurement environments. For teams standardizing on 400G infrastructure, it offers a practical way to connect compatible platforms while preserving the physical discipline required in modern high-airflow racks. When the link budget is tight and the deployment window is short, this is the kind of cable that reduces friction without compromising the fabric.