The JBX05055 1-meter 400GBASE-CR8 QSFP-DD to 4x QSFP56 Direct Attach Copper (DAC) Breakout Cable represents a cost-effective, high-performance solution for organizations upgrading to 400G network infrastructure. As a direct replacement for Juniper's QDD-4X100G-1M, this cable delivers enterprise-grade reliability with passive breakout functionality. **Technical Specifications:** This passive DAC cable features 30AWG twinax copper construction optimized for signal integrity across its 1-meter length. The QSFP-DD connector on one end subdivides to four QSFP56 connectors, allowing a single 400G port to function as four independent 100G connections—ideal for flexible network architecture designs. **Performance & Compliance:** Manufactured to ETC 400GBASE-CR8 specifications and QSFP-DD MSA standards, this cable operates reliably in temperatures ranging from 0°C to 70°C (32°F to 158°F). Full RoHS/ELV compliance and certifications from TUV and UL ensure compatibility with stringent data center and enterprise environment requirements. **Key Advantages:** • **Cost-Effective:** Passive design eliminates expensive active electronics • **Low-Latency:** Direct copper connection ensures minimal signal delay • **Zero Power Consumption:** No additional power requirements or heat generation • **Reliability:** Proven design with 90-day warranty coverage • **Deployment Flexibility:** 1-meter length accommodates various rack configurations **Applications:** Ideal for data centers, cloud providers, financial institutions, and enterprises deploying high-density 400G networks. Particularly valuable for environments requiring breakout connectivity from 400G backbone infrastructure to multiple 100G endpoints. **Quality & Support:** Custodian-grade manufacturing with safety certifications ensures consistent performance. Available with custom brand programming options for enterprise deployments. Ships from strategic U.S. locations (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99. Upgrade your network infrastructure with this reliable, Juniper-compatible 400G breakout solution backed by comprehensive warranty protection.