The JBX05346 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents a cost-effective and efficient solution for enterprise-grade network connectivity. Manufactured to the highest standards with country-of-origin options including Vietnam and China, this 0.5m cable delivers exceptional performance for Palo Alto Networks environments. **Key Technical Specifications:** This passive DAC cable operates at 40GB data rates using the 40GBASE-CR4 standard, supporting IEEE 802.3ba and SFF-8436 compliance requirements. The 30AWG twinax copper construction provides optimal signal integrity while minimizing electromagnetic interference. Operating temperature range of 0-70°C (32-158°F) ensures reliable performance across diverse deployment scenarios. **Superior Design Features:** Unlike active optical cables, this passive solution requires no power consumption, reducing operational costs and heat generation in data center environments. The direct QSFP+ to QSFP+ connection ensures plug-and-play installation without complex configuration requirements. Copper connectors provide enhanced durability compared to fiber alternatives for short-distance applications. **Compliance & Certification:** This cable is fully RoHS and ELV compliant per EU directive 2002/95/EC, with TUV and UL safety certifications ensuring workplace safety. The compact 12x12x2mm dimensions facilitate installation in space-constrained server rack environments. **Ideal Applications:** Perfect for connecting top-of-rack switches to servers, connecting between network devices within the same rack, and supporting high-bandwidth applications requiring sub-100-meter connectivity. Replaces OEM part number PAN-QSFP-CU-0.5M directly. **Warranty & Support:** Backed by a 90-day limited warranty, with free standard shipping on orders exceeding $99. Ships from strategically located Danville, CA and Beaufort, SC facilities for rapid delivery. Custom brand programming is available for bulk enterprise orders.