The JBX05544 represents a cost-effective and reliable solution for 100 gigabit Ethernet connectivity in demanding data center environments. This 1.5-meter passive breakout direct attach copper cable is specifically designed to replace Arista's CAB-Q-2Q-100G-1.5M and delivers exceptional performance for high-speed network applications. **Key Technical Features:** This QSFP28 to dual-QSFP28 breakout cable supports 100GBASE-CR4 standard, enabling one 100Gb/s connection to be split into two 50Gb/s connections when needed. The 30AWG twinax copper construction provides superior signal fidelity and minimal attenuation, critical for maintaining data integrity in high-frequency transmission scenarios. The passive design eliminates the need for power consumption, reducing operational costs compared to active solutions. **Compliance and Certification:** Fully qualified to IEEE 802.3bj specifications and QSFP28 MSA standards, ensuring compatibility with industry-standard equipment. RoHS and ELV compliant, meeting strict environmental regulations. Safety certifications include RoHS, TUV, and UL approvals, guaranteeing safety and reliability in mission-critical deployments. **Performance Specifications:** Operates reliably in temperature ranges from 0°C to 70°C (32°F to 158°F), suitable for standard and controlled data center environments. The 1.5-meter length provides flexibility for rack-level connections without excessive cable management complexity. **Ideal Applications:** - Data center switch interconnections - High-performance server-to-switch connections - Storage area network (SAN) deployments - Cloud infrastructure upgrades - Enterprise network expansions **Quality Assurance:** Backed by a comprehensive 90-day limited warranty. Ships from US locations in Danville, CA or Beaufort, SC for fast delivery. Custom brand programming available for enterprise customers requiring OEM labeling. **Value Proposition:** Compared to active optical cables, this passive DAC solution offers significantly lower cost without sacrificing performance for short-distance applications. The Arista compatibility ensures seamless integration into existing infrastructure, while the robust construction guarantees long-term reliability and consistent network performance.