The JBX05349 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents the ideal solution for organizations requiring reliable, high-performance connectivity within data center and enterprise network environments. Engineered to meet stringent industry standards, this 1.5-meter cable delivers consistent 40Gbps throughput while maintaining signal integrity across demanding applications. **Technical Excellence** This QSFP+ DAC cable is manufactured with precision 30AWG Twinax copper conductors encased in protective plastic jacketing, providing optimal electromagnetic shielding and durability. The construction meets IEEE 802.3ba specifications and SFF-8436 form factor requirements, ensuring seamless compatibility with Arista switches and other certified equipment. The cable is manufactured in Vietnam and China using globally recognized quality standards. **Performance & Reliability** Passive DAC technology eliminates active signal regeneration, resulting in lower power consumption and reduced latency—critical factors in high-frequency trading, cloud computing, and virtualized environments. The 1.5-meter length is optimized for rack-to-rack and switch-to-server connections, maximizing flexibility without signal degradation. Operating across 0-70°C temperature ranges, this cable performs reliably in standard and elevated data center conditions. **Compliance & Certification** Fully RoHS and ELV compliant, this cable adheres to EU Directive 2002/95/EC environmental standards. TUV and UL certifications validate safety and performance metrics, providing peace of mind for enterprise deployments. The product replaces OEM part number CAB-Q-Q-1.5M, offering cost-effective alternative sourcing. **Value Proposition** With free standard shipping on orders exceeding $99 and a 90-day limited warranty, this cable delivers exceptional value. Custom brand programming is available for organizations requiring private-label solutions. Compact dimensions (12x12x2) facilitate dense rack deployments without space constraints. **Applications** Ideal for 40G interconnections in data center fabrics, high-performance computing clusters, financial networks, and enterprise campus backbones where passive copper connectivity provides optimal price-to-performance ratios compared to active and optical alternatives.