The JBX05617 0.5m 100GBASE-CR4 QSFP28 to 4x SFP28 breakout cable represents the pinnacle of data center interconnect solutions for organizations requiring high-density, high-speed networking. As a direct NVIDIA Mellanox MCP7F00-A00A compatible replacement, this passive direct attach copper (DAC) cable seamlessly integrates into existing enterprise infrastructure while delivering exceptional performance. **Technical Excellence:** This breakout cable features industry-standard 30AWG twinax copper construction with plastic jacketing, engineered to meet stringent IEEE 802.3bj and QSFP28 MSA specifications. The passive breakout design eliminates active components, reducing power consumption and heat generation—critical factors in densely-packed server environments. With 100GB data rate capability and compliance with RoHS, TUV, and UL standards, this cable meets the most demanding regulatory requirements. **Superior Performance & Reliability:** The 0.5-meter length provides optimal flexibility for equipment-to-equipment connections within server racks without excessive cable runs. Operating reliably across 0-70°C temperature ranges, this cable maintains signal integrity in both standard and thermally-challenging data center environments. QSFP28 to SFP28 configuration enables breaking out a single 100GB connection into four 25GB links, maximizing port density and infrastructure utilization. **Real-World Applications:** Ideal for hyperscale data centers, cloud service providers, financial institutions requiring ultra-low latency trading systems, and enterprise networks undergoing 100GB migration projects. Organizations benefit from immediate cost savings compared to transceiver-based solutions while maintaining compatibility with existing NVIDIA Mellanox-based infrastructure. **Quality Assurance:** Shipped from strategically located distribution centers in Danville, CA and Beaufort, SC, this product includes free standard shipping on qualifying orders. With 90-day limited warranty protection, your investment is safeguarded against defects. Custom brand programming availability supports OEM and large-scale deployment requirements. **Sustainability & Compliance:** Full RoHS compliance (EU Directive 2002/95/EC) and TUV certification ensure environmental responsibility and safety standards adherence. Manufactured in Vietnam and China with rigorous quality control, this cable delivers enterprise-grade reliability at competitive pricing.