The JBX05187 40GBASE-CR4 QSFP+ to SFP+ direct attach copper cable represents a premium solution for modern data center networking requirements. Built to Arista CAB-Q-S-1M specifications, this 1-meter passive breakout DAC cable is engineered to deliver exceptional performance in demanding network environments. Technical Specifications: This cable features professional-grade 30AWG twinax copper construction with durable plastic jacketing, providing excellent signal integrity over its 1-meter length. The QSFP+ master connector breaks out to four individual SFP+ ports, enabling flexible port expansion without requiring powered active converters. Operating across the industry-standard 40GBASE-CR4 protocol, it supports full-duplex 40Gb/s transmission rates while maintaining strict IEEE 802.3ba compliance standards. Compliance & Certification: The JBX05187 meets stringent international compliance requirements including RoHS (EU Directive 2002/95/EC), TUV, and UL safety certifications. This ensures environmental responsibility and workplace safety across global deployments. The cable is manufactured in Vietnam and China to the highest quality standards. Perfect Applications: This breakout cable excels in data center environments, high-frequency trading platforms, cloud infrastructure, and enterprise campus networks. It's particularly valuable for organizations upgrading from 10Gb to 40Gb architectures while maximizing existing SFP+ port infrastructure. Key Advantages: • Passive design eliminates power requirements and heat generation • Cost-effective alternative to active converters • Reliable performance over 1-meter runs • Compact form factor (12x12x2 dimensions) • Easy installation and hot-swappable capability • 90-day limited warranty included Shipping & Support: Ships free on orders over $99 from our Danville, CA or Beaufort, SC facilities. Custom brand programming available for OEM partnerships. Full 90-day limited warranty backs every purchase.