The JBX04988 2-meter 400GBASE-CR8 QSFP-DD to 2x QSFP56 direct attach copper cable represents a critical infrastructure component for modern data centers demanding maximum bandwidth efficiency. As a Juniper QDD-2X200G-2M compatible replacement, this passive breakout DAC cable seamlessly integrates into existing high-speed network deployments while providing exceptional value and reliability. **Technical Specifications & Features:** This high-performance cable features a QSFP-DD form factor on the primary end connecting to dual QSFP56 ports, enabling flexible 400GB-to-2x200GB port configurations. The 26AWG twinax copper construction with plastic jacketing ensures signal fidelity and durability in demanding rack environments. At precisely 2 meters in length, it balances reach with reduced latency for proximity-critical data center topologies. **Compliance & Safety:** Fully RoHS and ELV compliant, this cable meets EU Directive 2002/95/EC standards and carries TUV and UL safety certifications. It qualifies to ETC 400GBASE-CR8 and QSFP-DD MSA CMIS specifications, ensuring compatibility with certified equipment. **Performance Benefits:** As a passive solution, this DAC cable eliminates power consumption while delivering deterministic, low-latency performance superior to active alternatives. Operating across 0 to 70°C, it maintains reliability in diverse climate-controlled data center environments. The breakout configuration enables cost-effective port multiplication, converting single 400GB connections into dual 200GB paths. **Applications & Use Cases:** Ideal for enterprise data centers, cloud service providers, and high-performance computing clusters requiring 400GB interconnectivity. Perfect for ToR switch deployments, network fabric consolidation, and virtualized infrastructure requiring flexible bandwidth management. **Shipping & Support:** Ship from strategically located facilities in Danville, CA and Beaufort, SC ensures rapid delivery. Qualify for free standard shipping on orders exceeding $99. Backed by a 90-day limited warranty and custom brand programming availability for enterprise deployments.