The JBX05273 4-meter Arista-compatible 40GBASE-CR4 QSFP+ passive direct attach copper cable represents a cost-effective and reliable solution for high-speed data center interconnection. Built with premium 28AWG twinax copper construction and enclosed in protective plastic jacketing, this cable delivers exceptional signal integrity across 4-meter distances without requiring active signal conditioning. Key Features: This passive DAC cable is engineered to meet IEEE 802.3ba specifications, ensuring compatibility with Arista switches and other qualified networking equipment. The QSFP+ to QSFP+ connector configuration provides seamless integration into modern data center architectures supporting 40GB Ethernet speeds. Its passive design eliminates power consumption overhead, reducing operational costs while maintaining performance. Compliance & Safety: Fullly RoHS and ELV compliant per EU directive 2002/95/EC, the JBX05273 meets stringent environmental and safety standards. Certified by TUV and UL, it delivers confidence in enterprise deployments. The cable operates reliably across temperatures from 0-70°C, accommodating diverse data center thermal environments. Applications & Benefits: Ideal for connecting Arista switches to servers, storage arrays, and other networking infrastructure, this cable reduces latency and power consumption compared to active alternatives. The direct attach design provides immediate deployment without transceiver modules, simplifying inventory management and reducing total cost of ownership. Technical Specifications: - Length: 4 meters - Gauge: 28AWG twinax - Connectors: QSFP+ (both ends) - Data Rate: 40GB - Standards: IEEE 802.3ba, SFF-8436 - Operating Temperature: 0-70°C - Warranty: 90-day limited warranty The JBX05273 is manufactured in Vietnam and China with quality controls ensuring consistent performance. Custom brand programming is available for volume orders. Ships from Danville, CA and Beaufort, SC with free standard shipping on qualifying orders.