The JBX06047 4m Extreme Networks Compatible 10GBASE-CR SFP+ Passive Direct Attach Copper Cable represents a professional-grade networking solution engineered for demanding enterprise and data center environments. This specialized twinax cable delivers consistent 10Gbps performance while eliminating the need for active electronics, reducing power consumption and heat generation in dense network deployments. **Technical Specifications & Performance:** Constructed with high-quality 24AWG copper conductors and protective plastic jacketing, this cable meets industry-leading standards including SFF-8431 and SFF-8472 specifications. The passive DAC design ensures zero latency overhead and provides immediate plug-and-play functionality. Operating across a temperature range of 0°C to 70°C (32°F to 158°F), the cable maintains optimal performance in diverse physical environments. **Compatibility & Integration:** Fully compatible with Extreme Networks infrastructure, this cable replaces OEM part numbers including 10G-SFP-TWX-P-0401, 10305-4M, 10GB-C04-SFPP, and AA1403019-E6-4M. The SFP+ to SFP+ copper connectors ensure seamless integration with existing network equipment without requiring firmware updates or special configuration. **Compliance & Certification:** This cable adheres to RoHS and ELV directives (EU directive 2002/95/EC) and carries TUV and UL safety certifications, ensuring safe operation and environmental responsibility. The 90-day limited warranty provides added confidence in your investment. **Applications & Use Cases:** Ideal for server-to-switch connections, switch-to-switch interconnects, and storage area network (SAN) implementations. The 4-meter length accommodates standard rack deployments while the passive design makes it perfect for high-density environments where heat mitigation is critical. **Value & Support:** Qualifying orders over $99 receive free standard shipping from either Danville, CA or Beaufort, SC. Custom brand programming is available for enterprise accounts requiring OEM integration. This reliable, cost-effective solution delivers enterprise-class performance without the complexity or expense of active optics.