The JBX05984 0.5m 200GBASE-CR4 QSFP56 Direct Attach Copper cable represents an essential connectivity solution for modern data center infrastructure. As a direct replacement for HPE part number P06149-B21 (R5Z76A), this cable delivers exceptional performance in enterprise networking environments demanding ultra-high bandwidth capacity. **Key Features & Specifications:** This passive Direct Attach Copper cable leverages advanced 30AWG twinax technology to enable 200Gbps data transmission over short distances. The dual QSFP56 copper connectors ensure secure, reliable connections between compatible network devices. Constructed with durable copper cable and protective plastic jacketing, it withstands demanding data center environments while maintaining signal integrity. **Compliance & Certification:** Fully qualified to IEEE 802.3cd and QSFP56 MSA standards, this cable meets stringent industry requirements. RoHS, TUV, and UL certifications confirm compliance with EU directive 2002/95/EC and international safety standards, making it suitable for regulated enterprise deployments. **Performance & Reliability:** The 0.5m length optimizes connectivity in compact data center racks while minimizing latency. With a 90-day limited warranty and proven compatibility with HPE systems, this cable provides peace of mind for critical infrastructure. Operating across the 0-70°C temperature range, it performs reliably in controlled data center conditions. **Why Choose This Cable:** Passive DAC cables eliminate the power consumption and heat generation associated with active cables, reducing operational costs. The shorter 0.5m configuration makes it ideal for server-to-switch connectivity, storage arrays, and high-speed interconnects within rack systems. Custom brand programming is available for enterprise customers requiring tailored solutions. **Applications:** Perfect for enterprise data centers, cloud infrastructure, HPC clusters, and any environment requiring 200G bandwidth between compatible network equipment. RoHS compliant manufacturing from Vietnam and China ensures quality and environmental responsibility.