The JBX05117 5-meter 400GBASE-CR8 QSFP-DD direct attach copper cable represents a cost-effective and high-performance alternative to optical solutions for short-distance data center connectivity. This Dell-compatible cable (OEM part numbers 470-AEDG/470-AEDH) is engineered to meet the stringent requirements of modern high-speed network infrastructure. **Key Technical Specifications:** This direct attach copper cable delivers 400GB per second data transmission rates using the proven 400GBASE-CR8 standard. The 28AWG twinax copper construction provides excellent electrical performance while maintaining flexibility for cable routing in dense server environments. QSFP-DD form factor connectors ensure secure, hot-pluggable connections compatible with next-generation network equipment. **Performance & Compliance:** Fully qualified to ETC 400GBASE-CR8 and QSFP-DD Multi-Source Agreement (MSA) specifications, this cable guarantees interoperability with certified Dell networking equipment. Comprehensive safety certifications including RoHS, TUV, and UL compliance ensure reliable operation in diverse environments. The cable operates across an extended temperature range of 0-70°C (32-158°F), suitable for various data center cooling configurations. **Advantages of Direct Attach Copper:** DAC cables offer significant advantages over optical transceivers for short-distance connections (up to 5 meters). They eliminate the cost and complexity of optical modules, reduce power consumption, and provide deterministic latency. The active DAC design enhances signal integrity for longer cable runs while maintaining backward compatibility. **Enterprise Applications:** Perfect for hyperscale data centers, enterprise network upgrades, server-to-switch connectivity, and storage area networks requiring high-density, high-bandwidth connections. The 5-meter length accommodates typical Top-of-Rack (ToR) and mid-row switch deployments. **Reliability & Support:** Backed by a 90-day limited warranty and manufactured in Vietnam and China with quality assurance standards. Custom brand programming available for enterprise deployments. Shipped from US locations (Danville, CA and Beaufort, SC) with free standard shipping on qualifying orders.