The JBX05403 1-meter 40GBASE-CR4 QSFP+ passive direct attach copper cable represents a high-quality networking solution designed specifically for demanding data center environments. As a NVIDIA Mellanox compatible component, this cable integrates seamlessly with enterprise-grade networking equipment. **Technical Specifications:** This passive DAC cable features 30AWG twinax copper conductors with plastic jacketing, delivering 40GB/s data transmission capabilities. The QSFP+ form factor connectors are gold-plated for superior connectivity and durability. Operating reliably across temperatures from 0°C to 70°C (32°F to 158°F), it's suitable for various installation environments. **Compliance & Certification:** Fullly compliant with IEEE 802.3ba and SFF-8436 standards, this cable meets RoHS and EU directive 2002/95/EC requirements. TUV and UL certifications ensure safety and reliability in professional settings. The cable replaces multiple OEM part numbers, making it an ideal universal solution. **Advantages of Passive DAC Technology:** Passive direct attach cables offer significant benefits over active alternatives: lower cost, minimal power consumption, reduced heat generation, and shorter latency. At 1 meter, this cable is perfect for short-range intra-switch and server-to-switch connections in rack-mounted environments. **Ideal Applications:** • Data center fabric upgrades • High-performance computing clusters • Enterprise switching infrastructure • Server interconnects • Storage area network (SAN) implementations • Cloud computing environments **Quality Assurance:** Backed by a 90-day limited warranty and available with custom brand programming options, this cable delivers professional-grade reliability. Ships from strategically located warehouses in Danville, CA and Beaufort, SC, with free standard shipping on orders exceeding $99. **Compatibility:** Confirmed compatible with NVIDIA Mellanox networking equipment and other 40GBASE-CR4 capable devices. The 12x12x2mm compact dimensions make it easy to manage in dense cable environments while maintaining signal integrity.