The JBX05325 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents the ideal solution for organizations requiring reliable, high-speed 40GB Ethernet connectivity in data center and enterprise networking environments. With a compact 0.5-meter length, this cable is perfectly suited for short-distance interconnections between network devices, switches, and storage systems. Construction and Materials: Built with premium 30AWG twinax copper conductors encased in protective plastic jacketing, this cable delivers superior electromagnetic shielding and signal integrity. The dual twisted-pair design minimizes cross-talk and interference, ensuring clean, reliable data transmission at full 40GB speeds. Cisco Compatibility: Engineered specifically for Cisco infrastructure, this cable directly replaces OEM part numbers QSFP-H40G-CU0-5M and MA-CBL-40G-50CM, providing seamless compatibility with existing Cisco deployments. The QSFP+ to QSFP+ connector configuration ensures tool-free installation. Standards Compliance: Fully qualified to IEEE 802.3ba specifications and SFF-8436 standards, this cable meets the highest industry performance benchmarks. RoHS, TUV, and UL certifications confirm environmental responsibility and safety compliance with EU Directive 2002/95/EC. Passive Technology Advantages: Unlike active cables, this passive DAC design requires no external power, reducing operational costs and eliminating thermal management concerns. This makes it ideal for dense switch deployments where heat dissipation is critical. Operational Specifications: With an operating temperature range of 0-70°C (32-158°F), the cable performs reliably across varied deployment conditions. The robust construction ensures longevity and reduced total cost of ownership. Applications: Ideal for data center interconnects, server clustering, high-performance computing environments, and enterprise network upgrades. Custom brand programming is available for organizations requiring OEM-branded solutions. Warranty & Support: Includes 90-day limited warranty. Free standard shipping on orders over $99, with convenient fulfillment from Danville, CA or Beaufort, SC locations.