The JBX05355 1.5m 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents an ideal solution for organizations seeking reliable, cost-effective high-speed networking infrastructure. This enterprise-grade cable combines robust construction with proven compatibility to deliver exceptional performance in demanding data center and network environments. **Technical Specifications & Construction:** Featuring 30AWG twinax copper conductors with protective plastic jacketing, the JBX05355 is engineered to exacting standards. The cable measures 12x12x2 dimensions with a total length of 1.5 meters, offering optimal flexibility for rack-to-rack and device-to-device connections. QSFP+ to QSFP+ copper connectors ensure secure, seamless mating without additional adapters or tools. **Performance & Standards Compliance:** Qualified to IEEE 802.3ba specifications, this cable delivers authentic 40GB data rates for mission-critical applications. The passive DAC design eliminates the power consumption and heat generation associated with active optical cables, reducing operational costs and environmental impact. Operating temperature range of 0-70°C (32-158°F) accommodates standard data center conditions. **Certifications & Safety:** Comprehensive compliance certifications include RoHS (EU directive 2002/95/EC), TUV, and UL standards, ensuring safe deployment in enterprise networks. These certifications demonstrate adherence to international electromagnetic safety and environmental protection requirements. **Compatibility & Integration:** Designed specifically for Extreme Networks equipment, the JBX05355 replaces OEM part numbers 40G-DACP-QSFP1Z5M, 10312-150C, 40GB-C01.5-QSFP, and AA1404029-E6-150CM. Seamless integration with existing infrastructure minimizes compatibility concerns and installation complexity. **Ideal Applications:** Perfect for high-bandwidth requirements including data center interconnects, server cluster networking, storage area networks (SANs), and enterprise backbone connectivity. The 1.5m length accommodates typical spacing in modern data center architectures while minimizing signal degradation. **Customer Support & Warranty:** Each cable includes a 90-day limited warranty and ships from convenient locations in Danville, CA and Beaufort, SC. Orders exceeding $99 qualify for free standard shipping, providing exceptional value. Custom brand programming is available for organization-specific requirements.