The JBX05070 400GBASE-CR8 QSFP-DD to 8x SFP56 breakout DAC cable represents a cost-effective and reliable solution for organizations modernizing their network infrastructure to support 400GB connectivity. This 2.5-meter passive breakout cable delivers enterprise-grade performance without the power consumption and latency concerns associated with active electronics. **Key Technical Features:** This cable adheres to the ETC 400GBASE-CR8 standard and QSFP-DD MSA specifications, ensuring compatibility with modern network equipment. The 28AWG twinax copper conductors provide optimal signal transmission characteristics, minimizing crosstalk and ensuring clean, reliable data transfer at 400GB rates. As a passive design, there are no active components to fail, resulting in lower total cost of ownership and simplified deployment. **Connectivity & Compatibility:** The single QSFP-DD port connects to 8 independent SFP56 interfaces, allowing network architects to distribute 400GB bandwidth across multiple downstream connections. This is ideal for server-to-switch and switch-to-switch applications in high-density data centers. Fully compatible with Arista equipment, this cable directly replaces OEM part CAB-D-8S-400G-2.5M. **Design & Materials:** Constructed with high-quality copper cable and protective plastic jacketing, the JBX05070 withstands rigorous data center environments. The 12x12x3mm form factor ensures manageable cable routing in crowded rack spaces. The 2.5-meter length provides flexibility for mid-range connections without excess slack. **Compliance & Certification:** RoHS, TUV, and UL certifications verify compliance with international environmental and safety standards (EU directive 2002/95/EC). This makes the cable suitable for regulated industries and organizations with strict procurement requirements. **Performance Specifications:** Operating temperature range from 0-70°C ensures reliability in both standard and warm data center environments. The cable maintains performance consistency throughout its operational lifespan, backed by a 90-day limited warranty. **Ideal Use Cases:** This breakout cable is perfect for modern data centers transitioning to 400G infrastructure, high-performance computing clusters, content delivery networks, and service provider core networks. It's especially valuable where multiple lower-speed connections need to be aggregated into a single 400G trunk line or vice versa. **Shipping & Support:** Enjoy free standard shipping on orders over $99 from our facilities in Danville, CA and Beaufort, SC. Custom brand programming is available for organizations with specific requirements. The combination of premium specifications, proven compatibility, and competitive pricing makes the JBX05070 an excellent choice for network modernization projects.