The JBX05140 1-meter 400GBASE-CR8 QSFP-DD Direct Attach Copper Cable represents the cutting edge of high-speed network connectivity, engineered to replace Juniper's OEM QDD-400G-DAC-1M part number. As networks demand ever-increasing bandwidth, this passive DAC cable delivers the performance and reliability required for modern data center environments without compromising on quality or compliance. **Superior Construction & Design** Manufactured with premium 30AWG twinax copper conductors and durable plastic jacketing, this cable provides exceptional signal integrity and durability. The QSFP-DD to QSFP-DD connector architecture ensures compatibility with next-generation 400G network switches, routers, and appliances. At exactly 1 meter in length, it's optimized for direct equipment-to-equipment connections within rack environments, eliminating unnecessary cable length while maintaining signal quality. **Passive DAC Technology Benefits** Unlike active DAC cables, this passive solution requires no external power, reducing complexity and improving reliability. It's ideal for short-reach applications within data centers (typically 1-7 meters) where passive DAC technology excels in performance and cost-effectiveness. The absence of active components means lower operational costs and reduced heat generation. **Compliance & Certification** Fully compliant with RoHS directives (EU 2002/95/EC) and ELV requirements, this cable meets stringent environmental and safety standards. TUV and UL certifications verify adherence to international electrical safety standards, ensuring your network infrastructure meets regulatory requirements and industry best practices. **Performance Specifications** Qualified to IEEE 400GBASE-CR8 specifications and QSFP-DD MSA/CMIS standards, this cable delivers reliable 400GB transmission rates. The operating temperature range of 0°C to 70°C accommodates standard data center environments. Dimensions of 12x12x2 provide a compact form factor ideal for crowded equipment racks. **Target Applications** Perfect for enterprise data centers, cloud infrastructure providers, high-performance computing facilities, and network service providers upgrading to 400G connectivity. Whether consolidating server connections, upgrading switch fabrics, or expanding network capacity, this Juniper-compatible cable provides cost-effective, proven performance. **Warranty & Support** Backed by a 90-day limited warranty, this cable provides peace of mind for your network investments. Custom brand programming is available for OEM applications, allowing seamless integration into comprehensive network solutions. Order with confidence and enjoy free standard shipping on orders over $99, with rapid fulfillment from our Danville, CA or Beaufort, SC distribution centers.