The JBX05738 2.5m 100GBASE-CR4 QSFP28 Passive Direct Attach Copper Cable represents the optimal solution for high-speed data center interconnectivity. This Intel-compatible networking cable delivers exceptional performance for 100GB Ethernet applications while maintaining cost efficiency through passive technology. **Product Specifications:** Designed to IEEE 802.3bj and QSFP28 MSA standards, this cable features precision-engineered QSFP28 copper connectors on both ends, eliminating the need for separate transceivers. The 28AWG twinax copper construction ensures superior signal integrity over the 2.5-meter span, making it ideal for direct server-to-switch and switch-to-switch connections within standard data center rack layouts. **Performance & Compatibility:** As a passive DAC solution, this cable requires no external power, reducing operational costs and infrastructure complexity. Full Intel compatibility ensures seamless integration with industry-leading networking equipment. The cable meets all IEEE 802.3bj specifications for 100GBASE-CR4 transmission, guaranteeing reliable performance in demanding enterprise environments. **Quality & Compliance:** Manufactured to rigorous standards and certified RoHS, TUV, and UL compliant, this cable meets EU directive 2002/95/EC requirements. The durable plastic jacketing protects against environmental factors while maintaining flexibility for installation in tight spaces. Operating reliably between 0-70°C, it performs consistently in various data center conditions. **OEM Compatibility:** This cable successfully replaces OEM part numbers XXLDACBL2-5M, 100CQQF3025, and 100CQQH3025, providing customers with a cost-effective alternative without compromising quality. Custom brand programming is available for enterprises requiring branded solutions. **Why Choose This Cable:** Passive DAC cables offer superior advantages over active alternatives: lower latency, longer lifespan, reduced heat generation, and lower total cost of ownership. The 2.5-meter length strikes the perfect balance for typical data center rack configurations while maintaining signal quality. With a 90-day limited warranty and free standard shipping on orders over $99, it represents excellent value for network infrastructure investments. **Applications:** Ideal for data centers, cloud computing facilities, high-performance computing clusters, and enterprise server environments requiring reliable 100GB connectivity. Perfect for organizations upgrading legacy infrastructure or expanding network capacity without excessive capital expenditure.