The JBX05429 40GBASE-CR4 QSFP+ Passive Direct Attach Cable represents the optimal solution for high-density data center connectivity, particularly in Arista network deployments. This 2-meter passive DAC cable combines affordability with exceptional performance, making it an ideal alternative to active optical cables for shorter interconnect distances. **Technical Specifications & Performance** Built to IEEE 802.3ba specifications, this cable supports full 40GB data rates with minimal signal degradation. The 30AWG twinax copper construction provides superior electromagnetic shielding and reduced insertion loss, ensuring reliable transmission over its 2-meter length. The dual QSFP+ connectors deliver plug-and-play compatibility with Arista switches and compatible networking equipment, replacing legacy CAB-Q-Q-2M components. **Build Quality & Durability** The cable features robust copper connectors and advanced plastic jacketing that protects against physical damage and environmental stress. Operating reliably across a wide temperature range (0-70°C), it maintains consistent performance in diverse data center conditions. The compact 12x12x2 form factor simplifies cable management in crowded rack environments. **Compliance & Certification** Fully RoHS and ELV compliant per EU Directive 2002/95/EC, this cable meets stringent environmental and safety standards. TUV and UL certifications confirm adherence to international electrical safety requirements. These certifications provide peace of mind for enterprise deployments requiring regulatory compliance. **Cost-Effective Networking Solution** Unlike active optical alternatives, passive DAC cables eliminate expensive transceivers and power consumption while delivering comparable performance for short-reach applications. The JBX05429 provides exceptional value without compromising reliability. Custom brand programming is available for enterprise customers requiring branded components. **Warranty & Support** Every cable includes a comprehensive 90-day limited warranty, backed by expert support. With free standard shipping on qualifying orders, this solution is both affordable and accessible for immediate deployment needs.