The JBX05022 1.5-meter 400GBASE-CR8 QSFP-DD to 4x QSFP28 direct attach copper (DAC) breakout cable represents a cost-effective solution for modern high-speed data center infrastructure. This passive breakout cable enables seamless connectivity between 400G switches and quad 100G interfaces, providing network architects with flexible topology options without requiring active components or external power. **Key Features:** - **High-Speed Performance**: 400GBASE-CR8 compliant for reliable 400Gbps data transmission - **Flexible Breakout Architecture**: One QSFP-DD port to four QSFP28 ports for optimal port density - **Premium Construction**: 30AWG twinax copper with protective plastic jacketing ensures durability and signal integrity - **Passive Design**: No active components mean lower power consumption and reduced heat generation - **Arista Compatibility**: Fully compatible with Arista DCS switches and networking platforms - **Compliance Certifications**: RoHS, TUV, and UL certified for safety and environmental standards - **Extended Operating Range**: Functions reliably from 0 to 70°C (32 to 158°F) **Technical Specifications:** - Length: 1.5 meters - Gauge: 30AWG - Connectors: QSFP-DD to 4x QSFP28 - Cable Type: Passive breakout DAC - Standards: ETC 400GBASE-CR8, QSFP-DD MSA, CMIS - RoHS Compliant: EU Directive 2002/95/EC **Applications:** Ideal for data center environments requiring high-density 100G connections, cloud infrastructure upgrades, and enterprises transitioning to 400G architectures. Commonly deployed in hyperscale environments, colocation facilities, and enterprise networks prioritizing bandwidth efficiency. **Advantages Over Alternatives:** Compared to active cables or optical solutions, passive DAC cables offer superior cost-efficiency, lower latency, and zero maintenance requirements. The 1.5-meter length provides optimal reach for equipment rack configurations while maintaining signal quality. Ships from US locations with free standard shipping on orders over $99. Custom brand programming available upon request. Backed by a 90-day limited warranty for peace of mind.