The JBX05383 1m Extreme Networks Compatible 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents an essential component for modern data center infrastructure. As a passive DAC solution, this cable eliminates the need for external power sources while delivering consistent 40GB/s performance, making it an economical choice for enterprises seeking to optimize their networking investments. **Technical Excellence** Built to IEEE 802.3ba specifications, this QSFP+ cable features premium 30AWG twinax copper conductors enclosed in protective plastic jacketing. The construction ensures minimal signal loss and electromagnetic interference, critical factors in high-speed datacenter environments. Operating across a robust 0-70°C temperature range, the cable maintains performance stability in diverse deployment scenarios. **Compatibility & Integration** Designed specifically for Extreme Networks equipment, this cable replaces original part numbers 40G-DACP-QSFP1M, 10312, AA1404029-E6, and 40GB-C01-QSFP, simplifying procurement and inventory management. The QSFP+ form factor enables direct connection between compatible network switches, routers, and high-speed network adapters without additional adapters or converters. **Compliance & Certification** Fully compliant with RoHS (EU directive 2002/95/EC) and ELV standards, this cable meets stringent environmental and safety requirements. UL and TUV certifications confirm adherence to international electrical safety standards, ensuring peace of mind in mission-critical deployments. **Practical Advantages** The 1-meter length is optimized for typical switch-to-switch connections in rack-mounted environments. As a passive solution, deployment is straightforward with zero configuration required. The cable's compact design fits seamlessly into dense server racks while maintaining superior signal integrity compared to longer passive runs or active alternatives. **Backed by Warranty** Included 90-day limited warranty provides additional confidence in product reliability. With free standard shipping on orders exceeding $99 and quick availability from Danville, CA and Beaufort, SC locations, procurement is efficient and cost-effective. Whether upgrading existing infrastructure or building new high-speed networks, this DAC cable delivers enterprise-grade performance at competitive pricing.