Keep high-speed switch-to-switch and switch-to-server links tight, predictable, and easy to manage with this Cisco compatible 10GBASE-CU active DAC. The 4 m twinax design is well suited for short-reach interconnects where optical modules are unnecessary and copper direct attach keeps latency low. For dense rack environments, that means fewer components, less power draw, and cleaner cable routing. This SFP+ cable is designed for Cisco-compatible ports and supports 10 GbE connectivity over a direct attach copper path. The active signal conditioning helps preserve link integrity across the full 4 m run, making it a practical choice for adjacent racks, top-of-rack to server connections, and short uplinks inside tightly packed cabinets. TAA compliance adds procurement confidence for public sector and regulated environments. Compared with lower-cost passive alternatives, an active DAC is the better fit when you need more consistent performance over a longer short-reach span. It reduces the complexity of separate optics and fiber patching while keeping the deployment footprint compact. For teams standardizing on SFP+ infrastructure, this cable offers a straightforward way to extend 10 GbE links without overbuilding the network path.