Use this 1 m passive DAC to keep short 20 GbE links direct and orderly in tightly packed racks. For teams managing switch-to-switch or switch-to-server connections, a passive copper assembly is often the most efficient way to preserve a clean physical layer without adding unnecessary complexity. The SFPDD interface makes this cable suitable for environments that need compact, high-density connectivity with a straightforward installation profile. Because it is passive, it avoids the added power and component overhead of active alternatives, which can be an advantage in short-reach deployments where the link budget is already well defined. This cable is a practical choice for infrastructure teams that value predictable cabling, low overhead, and consistent port alignment. In enterprise closets and data center cabinets, the right DAC can reduce clutter, simplify maintenance, and support a more disciplined rack layout. When the run is short and the requirement is specific, this part delivers exactly that.