Keep short-reach 40 Gigabit Ethernet links direct, predictable, and easy to deploy. The 40GBase-CU QSFP+ to QSFP+ Direct Attach Cable is designed for infrastructure teams that want a straightforward copper connection between compatible QSFP+ ports without introducing optical modules or extra power draw. At 5 m, it covers common rack-to-rack and row-adjacent runs while staying within the practical range where DAC makes the most sense. That makes it a strong fit for top-of-rack switching, aggregation layers, and server uplinks in dense environments where cable simplicity matters as much as throughput. By using a direct attach design, it reduces component count and helps keep procurement aligned with standard 40 GbE port planning. For teams balancing performance and budget, DAC is often the disciplined choice when fiber is unnecessary. It avoids the added complexity of matching transceivers, keeps installation straightforward, and supports a clean physical layout in the rack. This cable is built for organizations that value dependable short-distance connectivity and want to spend where it changes the architecture, not where it adds overhead.