The JBX05109 2m 400GBASE-CR8 QSFP-DD Direct Attach Copper Cable represents the ideal solution for enterprise and data center networks requiring high-speed, cost-effective connectivity at the 400-gigabit scale. This passive direct attach copper (DAC) cable delivers exceptional performance while maintaining full compatibility with Cisco QDD-400-CU2M specifications, ensuring seamless integration into existing network infrastructure. Technical Specifications: This premium cable features 28AWG twinax construction with durable plastic jacketing, providing reliable signal transmission and physical durability in demanding network environments. The QSFP-DD to QSFP-DD connector configuration enables direct connection between compatible network switches and interfaces without requiring additional transceivers. Operating across the industry-standard temperature range of 0-70°C (32-158°F), this cable maintains consistent performance in various deployment scenarios. Compliance & Certification: Fully qualified to ETC 400GBASE-CR8 specifications and CMIS standards, the JBX05109 meets stringent industry requirements. RoHS and EU Directive 2002/95/EC compliance ensures environmental responsibility, while UL and TUV certifications validate safety and performance standards. These certifications provide peace of mind for enterprise deployments where compliance and reliability are paramount. Applications & Use Cases: This cable excels in data center interconnect scenarios, high-performance computing clusters, and enterprise campus networks where passive 400G connectivity is required. The 2-meter length provides flexible routing while remaining cost-effective compared to active optical solutions. Network administrators benefit from simplified cable management, reduced power consumption, and lower total cost of ownership. Quality Assurance: Backed by a 90-day limited warranty and manufactured in Vietnam or China using proven quality standards, this cable delivers reliable performance. Custom brand programming is available for organizations requiring white-label solutions. Ships from multiple US locations (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99. Why Choose the JBX05109: As a drop-in replacement for the Cisco QDD-400-CU2M, this cable eliminates compatibility concerns while offering superior value. Passive DAC technology requires no power, generates minimal heat, and introduces negligible latency—critical factors for latency-sensitive applications. Whether upgrading existing infrastructure or building new 400G networks, this cable provides the reliability and performance network professionals demand.