Cisco QSFP-H40G-CU5M= 40GBASE-CR4 Passive 5 m | QSFP+ Copper — QSFP-H40G-CU5M=

Maintain high-speed connectivity where short-reach links matter most. Cisco’s 40GBASE-CR4 passive direct-attach copper cable is designed for 40 GbE environments that need predictable performance, low latency, and simple deployment inside the rack or across adjacent racks. At 5 m, this QSFP+ twinax cable gives infrastructure teams a cost-conscious alternative to optical transceivers for short-distance 40 Gbit/s links. The passive design avoids added power requirements while keeping the connection straightforward: QSFP+ to QSFP+, male to male, ready for supported network devices. This cable is a strong fit for switch interconnects, top-of-rack aggregation, and server uplinks where cable management, signal integrity, and procurement discipline all matter. Cisco’s build quality and platform compatibility help reduce friction during deployment and standardization, especially in environments that prefer vendor-aligned cabling for critical paths. When the requirement is dependable 40 GbE at short range, this cable delivers the right balance of reach, simplicity, and value. Ideal For 40 GbE switch-to-switch links in the same rack Top-of-rack to server uplinks in dense data centers Adjacent-rack interconnects where optical modules are unnecessary Standardized Cisco network deployments requiring short-reach copper Why This Product 1 Passive design avoids the added power of active optics 2 5 m reach suits rack and adjacent-rack 40 GbE links 3 QSFP+ to QSFP+ connectivity simplifies deployment 4 Cisco alignment supports standardized infrastructure builds