The JBX05393 40GBASE-CR4 QSFP+ passive direct attach copper cable represents an intelligent investment in reliable, high-speed network infrastructure. This 1-meter cable delivers exceptional value for organizations requiring cost-effective 40Gbps connectivity without compromising on performance or reliability. **Technical Excellence:** Built to IEEE 802.3ba and SFF-8436 standards, this cable implements proven 40GBASE-CR4 technology that ensures consistent data transmission at 40Gbps. The 30AWG twinax copper conductors provide optimal signal integrity while maintaining flexibility for installation in tight spaces. Manufactured using precision engineering in Vietnam and China, each cable undergoes rigorous quality testing before shipment. **Key Performance Features:** - Passive DAC technology eliminates active electronics and power consumption - 1-meter length ideal for short-reach data center connections - QSFP+ copper connectors provide secure, reliable mating - Operating temperature range: 0-70°C (32-158°F) for flexible deployment - Supports both direct server-to-switch and switch-to-switch connectivity **Compliance & Certification:** Fully RoHS and ELV compliant per EU Directive 2002/95/EC, this cable meets stringent environmental and safety standards. TUV and UL certifications confirm adherence to international safety protocols, ensuring your network infrastructure meets regulatory requirements. **Ideal Applications:** Perfect for enterprise data centers, high-frequency trading environments, cloud infrastructure, and large-scale server deployments where low-latency, high-bandwidth connectivity is essential. Compatible as a replacement for OEM part numbers CBL1-0600130 and XLDACBL1, providing seamless integration into existing Intel-based network environments. **Cost-Effective Solution:** Passive DAC cables deliver superior value compared to active alternatives, with no ongoing power costs or complex installation requirements. The 1-meter length reduces cable clutter while maintaining optimal performance for critical network segments. **Support & Warranty:** Backed by a 90-day limited warranty and shipped from distribution centers in Danville, CA and Beaufort, SC for rapid delivery. Free standard shipping on orders over $99 makes this enterprise-grade solution accessible for organizations of all sizes.