The JBX06534 400GBASE-CR8 QSFP-DD to 4x QSFP28 active breakout DAC cable represents a cost-effective solution for modern data center connectivity needs. This premium 4-meter cable bridges the gap between next-generation 400G port technology and established 100G infrastructure, offering seamless compatibility with Arista networking equipment. **Technical Excellence:** Certified to ETC 400GBASE-CR8 specifications and QSFP-DD MSA standards, this cable delivers reliable 400GB throughput with active signal conditioning. The 28AWG gauge provides optimal copper-to-insulation ratio for superior signal fidelity, while the twinax construction minimizes crosstalk and electromagnetic interference across the full 4-meter span. **Enterprise-Grade Compliance:** Full RoHS/ELV compliance and TUV/UL certifications ensure this cable meets stringent international standards for safety and environmental responsibility. Manufactured in Vietnam and China using quality-controlled processes, each unit undergoes rigorous testing to maintain data integrity in mission-critical environments. **Practical Advantages:** The active breakout design eliminates signal degradation that passive solutions may introduce, ensuring consistent performance. With low power consumption, this cable operates efficiently without generating excessive heat in densely-populated patch panels. The 4-meter length accommodates standard 19-inch rack depths with ample slack for cable management flexibility. **Deployment Flexibility:** Ideal for upgrading existing 100G networks to 400G backbone connectivity, provisioning high-performance storage area networks (SANs), or supporting east-west traffic in hyperscale data centers. Custom brand programming is available for organizations requiring proprietary labeling. **Support & Reliability:** 90-day limited warranty protects your investment, with expedited shipping from US warehouses (Danville, CA and Beaufort, SC). Free standard shipping applies to orders exceeding $99, reducing total deployment costs. Drop-ship capabilities and bulk pricing are available for large-scale infrastructure projects.