Build short-reach 400 GbE links without adding optical modules or unnecessary patching overhead. This Arista compatible direct attach copper cable is designed for high-density environments where adjacent switches, routers, or compute platforms need a clean, predictable interconnect path. At 3 m, it gives infrastructure teams enough reach for rack-level routing while staying within the practical limits of copper-based high-speed connectivity. That makes it a strong fit for top-of-rack and end-of-row designs where cable discipline matters and every connection must be easy to trace, service, and replace. For teams standardizing on compatible hardware, this cable offers a procurement-friendly alternative to OEM-branded parts while preserving the form factor and performance expectations of 400G DAC deployments. It is the kind of component that earns its place in premium infrastructure: simple, fast, and purpose-built for short-distance throughput.