The JBX05056 400GBASE-CR8 QSFP-DD to 4x QSFP56 breakout DAC cable represents a cost-effective solution for high-speed data center networking. Specifically engineered for NVIDIA Mellanox platforms, this 1-meter passive cable delivers enterprise-grade performance without the complexity or expense of active optical solutions. **Technical Specifications:** This premium direct attach copper cable features a robust 30AWG twinax construction with plastic jacketing, designed to withstand demanding data center environments. The QSFP-DD form factor provides a 1x400G to 4x100G breakout configuration, enabling flexible bandwidth distribution across multiple port connections. With a 1-meter length, the cable bridges equipment within standard rack dimensions while maintaining full 400GB signal integrity. **Performance & Compatibility:** Qualified to ETC 400GBASE-CR8 specifications and fully compatible with QSFP-DD MSA and CMIS standards, this cable directly replaces NVIDIA Mellanox OEM part numbers 980-9I48Y-00W001 and MCP7F60-W001R30. The passive breakout design requires no power, reducing operational costs and heat generation—critical considerations in high-density environments. **Compliance & Reliability:** Manufactured to strict quality standards with RoHS and ELV compliance, TUV and UL certifications ensure safety across all operating conditions. Operating temperature range of 0-70°C (32-158°F) accommodates standard and enhanced data center cooling setups. Each cable includes a 90-day limited warranty, backed by industry-leading support. **Ideal Applications:** - Data center fabric connectivity - High-performance computing clusters - Storage network infrastructure - Server-to-switch deployments - Multi-rack interconnections With free standard shipping on orders over $99 and availability from multiple US locations (Danville, CA and Beaufort, SC), this cable offers rapid deployment capabilities. Custom brand programming is available for integration into OEM solutions. Whether upgrading existing NVIDIA Mellanox infrastructure or building new 400G-capable networks, the JBX05056 delivers proven reliability and performance at competitive pricing.