The JBX05812 0.5m 100GBASE-CR4 QSFP28 Passive Direct Attach Copper Cable represents the optimal connectivity solution for organizations seeking reliable, cost-effective 100GB data center networking. This passive DAC cable eliminates the need for active electronics, reducing power consumption and heat generation while maintaining exceptional signal quality over short distances. Key Technical Specifications: This cable is constructed with 30AWG Twinax copper conductors encased in protective plastic jacketing, designed to transmit low-voltage network signals with minimal signal degradation. The 0.5-meter length makes it ideal for equipment-to-equipment connectivity within racks or between adjacent network switches. QSFP28 to QSFP28 connectors ensure seamless compatibility with modern networking equipment. Compliance and Certification: Fully qualified to IEEE 802.3bj standards and QSFP28 MSA specifications, this cable meets stringent industry requirements. RoHS and ELV compliance ensures environmental responsibility, while UL and TUV certifications provide additional assurance of safety and reliability. These certifications make it suitable for enterprise deployments across various regulatory jurisdictions. Arista Compatibility: Designed as a direct replacement for Arista part number CAB-Q-Q-100G-0.5M, this cable guarantees plug-and-play compatibility with Arista networking infrastructure. Organizations standardized on Arista equipment can confidently deploy this cost-effective alternative without compatibility concerns. Performance Benefits: Passive DAC cables deliver 100GB transmission speeds without power requirements, making them ideal for high-density deployments. Compared to active cables, passive DACs offer lower total cost of ownership, reduced operational complexity, and minimal maintenance requirements. The compact 12x12x2mm dimensions fit seamlessly into cable management systems. Operational Durability: Rated for operating temperatures between 0-70°C, this cable performs reliably in standard data center environments. The rugged construction withstands repeated insertion and removal cycles typical of active network infrastructure. All products include a 90-day limited warranty, providing peace of mind for your network investments. Manufactured in Vietnam and China with quality assurance processes, the JBX05812 delivers enterprise-grade performance at competitive pricing. Free standard shipping on orders over $99 and availability from multiple US distribution centers ensure rapid deployment. Whether upgrading existing infrastructure or building new data center networks, this QSFP28 DAC cable provides the reliable connectivity your organization demands.