The JBX05590 5-meter 100GBASE-CR4 QSFP28 to SFP28 breakout DAC cable represents a cost-effective solution for high-speed data center interconnect requirements. This passive direct attach copper cable eliminates the need for active electronics, reducing power consumption and latency while maintaining superior performance. **Key Features:** - 100GB data rate capability with 100GBASE-CR4 support - NVIDIA Mellanox MCP7F00-A005 compatible design - Passive breakout configuration converting one QSFP28 port to four SFP28 ports - 26AWG twinax copper construction for signal integrity - 5-meter length suitable for rack-to-rack connectivity - RoHS, TUV, and UL certified for regulatory compliance - Operating range: 0-70°C for flexible deployment **Technical Specifications:** This cable adheres to IEEE 802.3bj specifications and QSFP28 MSA standards, ensuring interoperability with enterprise networking infrastructure. The 26AWG gauge provides optimal impedance matching and crosstalk reduction. Each connector features high-quality copper contacts for reliable connections. **Applications:** Ideal for enterprise data centers, high-performance computing clusters, and storage area networks requiring breakout connectivity. Perfect for customers transitioning from QSFP28 single-port connections to multiple SFP28 endpoint requirements. **Why Choose JBX05590:** Compared to active breakout cables, this passive DAC solution offers lower operating costs, reduced power draw, and minimal latency. Direct compatibility with NVIDIA Mellanox equipment ensures seamless integration into existing infrastructure. The 90-day warranty and free standard shipping provide additional value and customer assurance. **Installation Notes:** Simply connect the QSFP28 connector to your compatible device's QSFP28 port and attach SFP28 transceivers to the breakout connectors. The cable's robust construction withstands typical data center environments and repeated plug/unplug cycles.