Turn a single 100G uplink into four 25G connections without adding optical complexity. This 2 m passive DAC is built for QSFP28-to-4x SFP28 breakout deployments where short-reach copper is the right tool: low latency, low power, and straightforward installation. It is a practical choice for teams standardizing on Cisco-compatible infrastructure while keeping the cabling model simple and predictable. In dense switching environments, breakout cables help match port economics to workload demand. Instead of burning power and budget on optics for every short hop, this passive copper assembly supports direct attachment between compatible ports and keeps the signal path tight. The 2 m length is well suited for adjacent rack and same-rack deployments, giving installers enough slack for routing without introducing unnecessary cable bulk. TAA compliance adds procurement clarity for public sector and regulated buying environments. For architects, the appeal is consistency: a fixed-length, passive, vendor-compatible cable that supports repeatable deployment patterns across access, aggregation, and lab networks. For operations teams, it reduces the number of moving parts in rollout and troubleshooting.