Cisco QSFP-100G-CU1M= 100GBASE-CR4 Passive Copper Cable, 1M | QSFP28

Keep high-speed links tight, predictable, and cost-efficient in the rack. Cisco QSFP-100G-CU1M= is a 1 m passive copper cable designed for 100GBASE-CR4 direct attach connectivity between nearby network devices. It is well suited for top-of-rack and adjacent equipment connections where optical modules would add unnecessary cost and complexity. This cable supports short-reach 100 GbE interconnects with a passive design that avoids power draw at the cable assembly itself. That makes it a practical choice for dense environments where port count, airflow, and cable management all matter. The 1 m length helps keep patching clean inside the rack while preserving the direct, low-latency path expected in high-performance switching fabrics. For infrastructure teams standardizing on QSFP-based 100 GbE, this cable provides a straightforward way to connect compatible ports without introducing extra optics. It is a strong fit when you need dependable short-distance throughput and want to reserve optical budgets for longer runs. In procurement terms, it is the kind of component that quietly improves rack economics: fewer parts, less heat, and simpler deployment.