The JBX06532 400GBASE-CR8 QSFP-DD to 4x QSFP28 breakout DAC cable is a critical component for organizations building next-generation high-speed datacenter networks. This 2-meter passive copper cable enables direct communication between 400GB QSFP-DD ports and quad 100GB QSFP28 ports, providing flexible port multiplexing without additional power requirements or active electronics. Key Technical Specifications: - Form Factor: QSFP-DD to QSFP28 (4-channel breakout) - Cable Length: 2 meters - Data Rate: 400GBASE-CR8 (400GB/s) - Conductor Gauge: 30AWG twinax copper - Standards: IEEE 802.3bs, QSFP-DD MSA, CMIS - Operating Temperature: 0-70°C (32-158°F) - Dimensions: 12x12x2 inches Performance Advantages: As a passive DAC solution, this cable eliminates the latency, heat generation, and operational complexity associated with active optical components. The high-quality 30AWG copper construction ensures signal integrity over the full 2-meter span, critical for maintaining 400GB performance standards. The design is fully backward compatible with Arista networking equipment and other standards-compliant devices. Compliance & Safety: The cable meets stringent RoHS/ELV directives (EU 2002/95/EC) and carries UL and TUV certifications, ensuring safe deployment in enterprise environments. These certifications validate the cable's durability, fire safety, and electromagnetic compatibility standards. Ideal Applications: This breakout cable serves datacenter operators, cloud providers, and enterprises deploying high-density networking infrastructure. It's particularly valuable for scenarios requiring port aggregation, load balancing across multiple 100GB connections, or flexible network topology transitions. Value Proposition: Offering direct compatibility with Arista H-D400-4Q100-2M specifications, this SKU eliminates vendor lock-in concerns while providing proven interoperability. The 90-day warranty and free shipping on qualifying orders add risk-free deployment advantages. Whether you're upgrading existing infrastructure or building new datacenter connectivity, this cable delivers enterprise-grade reliability at competitive pricing.