The JBX05355 1.5m 40GBASE-CR4 QSFP+ passive direct attach copper cable represents a superior networking solution for Extreme Networks infrastructure. Engineered to the highest industry standards, this cable delivers exceptional performance in demanding data center environments. **Technical Specifications:** This passive DAC cable features 30AWG twinax copper conductors with professional-grade plastic jacketing, delivering uncompromised signal integrity. The QSFP+ connector form factor supports 40GB data transmission rates, meeting IEEE 802.3ba and SFF-8436 specifications. Operating across a 0-70°C temperature range, the cable maintains reliability in both controlled data centers and edge deployment scenarios. **Compatibility & Performance:** Manufactured to replace Extreme Networks OEM part numbers including 40G-DACP-QSFP1Z5M, 10312-150C, and 40GB-C01.5-QSFP, this cable ensures seamless integration with existing network infrastructure. The 1.5-meter length provides optimal flexibility for server-to-switch and switch-to-switch connections without unnecessary cable slack. **Certification & Quality Assurance:** Fully RoHS and ELV compliant, this cable meets EU directive 2002/95/EC standards. TUV and UL certifications ensure safety and reliability in enterprise deployments. Every cable includes a 90-day limited warranty, backed by responsive customer support. **Why Choose This Cable:** Passive DAC cables eliminate the power consumption and heat generation associated with active cables, reducing operational costs and environmental impact. Unlike fiber alternatives, copper DAC cables provide superior latency performance for latency-sensitive applications while maintaining cost-effectiveness for shorter distances. The robust copper construction ensures longevity and consistent performance. **Shipping & Support:** Available with free standard shipping on orders exceeding $99, this cable ships from multiple US locations (Danville, CA and Beaufort, SC) for rapid delivery. Custom brand programming is available for enterprise deployments. This is your ideal solution for cost-effective, high-performance data center connectivity.