The JBX05035 2m 400GBASE-CR8 QSFP-DD to 4x QSFP56 direct attach copper breakout cable represents the cutting-edge solution for next-generation data center networking infrastructure. As a Juniper QDD-4X100G-2M compatible alternative, this passive breakout DAC cable delivers exceptional performance for high-bandwidth networking applications requiring maximum port density and reliability. **Technical Specifications & Performance:** This 2-meter breakout cable features 28AWG twinax copper conductors with protective plastic jacketing, designed to meet the demanding requirements of 400GBASE-CR8 Ethernet standards. The QSFP-DD to 4x QSFP56 connector configuration enables seamless integration with existing Juniper network equipment, allowing single 400G ports to function as four independent 100G connections. Operating across a temperature range of 0-70°C (32-158°F), this cable maintains signal integrity in diverse environmental conditions. **Compliance & Certification:** Fully certified to IEEE ETC 400GBASE-CR8, QSFP-DD MSA, and CMIS specifications, this cable meets international standards for safety and environmental responsibility. RoHS, UL, and TUV certifications confirm compliance with EU directive 2002/95/EC and other regulatory requirements, making it suitable for enterprise and regulated industry deployments. **Key Benefits:** - **Port Density Multiplication:** Convert one 400G port into four 100G ports for enhanced network flexibility - **Passive Technology:** Zero power consumption and minimal latency compared to active solutions - **Cost-Effective:** Direct attach copper eliminates transceiver costs while maintaining performance - **Proven Compatibility:** Juniper-validated for seamless equipment integration - **Enterprise-Grade:** 90-day warranty with US warehouse support **Applications & Use Cases:** Ideal for hyperscale data centers, cloud computing environments, HPC facilities, and enterprise networks requiring high-bandwidth interconnect solutions. The 2-meter length accommodates standard rack-to-rack spacing while maintaining signal quality. Perfect for network upgrades and infrastructure modernization projects. **Shipping & Support:** Ships free on orders over $99 from Danville, CA and Beaufort, SC locations. Custom brand programming available for OEM and reseller requirements. Replace your Juniper QDD-4X100G-2M with confidence backed by comprehensive testing and quality assurance.