The JBX05124 0.5m 400GBASE-CR8 QSFP-DD Direct Attach Copper Cable represents the cutting edge of high-speed networking technology, delivering enterprise-grade performance for modern data centers and network infrastructures. This passive DAC cable is engineered to meet the demanding requirements of 400 Gigabit Ethernet applications while maintaining compatibility with Dell's ecosystem. **Technical Specifications & Performance** This cable features a robust 30AWG twinax copper construction that delivers exceptional signal integrity over short-reach distances. The passive Direct Attach Copper (DAC) design eliminates the need for power consumption and complex active electronics, reducing heat generation and operational costs. With full compliance to the 400GBASE-CR8 IEEE standard and QSFP-DD MSA specifications, this cable guarantees reliable performance in demanding environments. **Dell Compatibility & OEM Replacements** Designed specifically for Dell networking infrastructure, this cable serves as a drop-in replacement for OEM part numbers 470-ACTP, 470-ACUI, 470-ADYO, and 470-ADYS. This compatibility ensures seamless integration into existing Dell systems without requiring configuration changes or firmware updates. **Ideal Applications** • High-performance data center interconnections • Enterprise storage area network (SAN) deployments • Server-to-switch connectivity in 400G environments • DirectAttach applications in co-location facilities • Mission-critical network infrastructure upgrades **Quality Assurance & Compliance** Manufactured to strict international standards with RoHS and ELV certification, this cable meets EU directive 2002/95/EC requirements. TUV and UL safety certifications provide additional assurance of quality and reliability. The 90-day limited warranty covers manufacturing defects and ensures customer satisfaction. **Operational Advantages** The 0.5-meter length is optimized for compact data center environments where space is premium. Passive DAC technology eliminates the latency, power requirements, and maintenance concerns associated with active optical solutions. This makes it an economical choice for organizations building or expanding 400G infrastructure. With free standard shipping on orders over $99 and availability from multiple fulfillment centers (Danville, CA and Beaufort, SC), this cable offers both value and convenience for enterprise customers.