The JBX05464 3-meter 40GBASE-CR4 QSFP+ passive direct attach copper cable represents a premium networking solution designed specifically for organizations relying on Brocade infrastructure. This passive DAC cable delivers exceptional performance without the complexity or power requirements of active optical or electronic alternatives. **Key Technical Specifications:** Operating at 40GB speeds, this cable utilizes IEEE 802.3ba-qualified construction with SFF-8436 compliance. The 30AWG twinax copper conductors provide superior signal integrity over its 3-meter length, making it ideal for moderate-distance intra-rack and inter-rack connectivity. The QSFP+ to QSFP+ connector configuration ensures universal compatibility across Brocade switches and compatible equipment. **Performance Benefits:** Passive DAC technology eliminates active components, resulting in zero latency addition and minimal power draw compared to active alternatives. This translates to reduced total cost of ownership while maintaining reliable 40GB transmission speeds. The copper construction provides excellent EMI resistance and signal fidelity in dense equipment environments. **Reliability & Compliance:** Full RoHS and ELV compliance ensures environmental responsibility and meets enterprise procurement standards. TUV and UL certifications validate safety and performance standards. The durable plastic jacket protects conductors from physical damage during installation and throughout operational life. A 90-day limited warranty provides peace of mind. **Ideal Applications:** Perfect for data center backbone connectivity, high-performance computing clusters, cloud infrastructure deployments, and enterprise networking environments. The 3-meter length accommodates typical rack-to-rack distances in standard data center layouts. **Shipping & Support:** Qualifies for free standard shipping on orders exceeding $99. Ships from convenient U.S. locations (Danville, CA or Beaufort, SC). Custom brand programming available for enterprise deployments requiring specific labeling or identification requirements.