The JBX05349 1.5m QSFP+ 40GBASE-CR4 Passive Direct Attach Copper Cable represents a cost-effective, high-performance solution for enterprise data centers and network infrastructure requiring reliable 40 Gigabit Ethernet connectivity. This passive DAC cable is specifically engineered for compatibility with Arista networking equipment and other standards-compliant devices. **Technical Excellence** Constructed with 30AWG twinax copper conductors and protective plastic jacketing, this cable delivers exceptional signal integrity over short to medium distances. The QSFP+ form factor provides compact, hot-swappable connectivity, while the passive design eliminates the need for external power sources—reducing complexity and operational costs. **Compliance & Certification** Fully qualified to IEEE 802.3ba and SFF-8436 specifications, this cable meets stringent industry standards. RoHS, TUV, and UL safety certifications ensure environmental compliance and operational safety. The cable operates reliably across 0-70°C temperature ranges, accommodating diverse data center environments. **Application Benefits** Ideal for rack-to-rack connections, top-of-rack switch interconnects, and server-to-switch deployments, this 1.5m length provides optimal flexibility without excessive cable slack. Organizations benefit from reduced heat generation, lower power consumption, and simplified network infrastructure compared to active solutions. **Quality Assurance** Manufactured in Vietnam and China to rigorous quality standards, each cable includes a 90-day limited warranty. The cable replaces Arista OEM part number CAB-Q-Q-1.5M, offering excellent value for equipment refresh and expansion projects. **Shipping & Support** Ship from dual US locations (Danville, CA and Beaufort, SC) ensures rapid delivery. Free standard shipping applies to orders exceeding $99. Custom brand programming is available for organizations requiring specialized identification or branding requirements.