The Arista CAB-D-D-400G is a 400G DAC (Direct Attach Cable) designed to connect high-speed networking devices, such as switches and servers, in data centers. This cable features QSFP-DD (Quad Small Form-factor Pluggable Double Density) connectors on both ends, utilizing passive Twinax copper for direct, low-latency transmission without the need for additional power. With support for up to 400Gbps data transfer, it ensures efficient and reliable short-range connections in high-performance, high-density environments. The CAB-D-D-400G offers a cost-effective and energy-efficient solution, making it ideal for applications requiring fast, stable networking with minimal infrastructure complexity.
