The JBX05981 200GBASE-CR4 QSFP56 Direct Attach Copper Cable represents a critical infrastructure component for modern high-speed data centers and enterprise networks. This 6-meter cable delivers exceptional performance for organizations requiring reliable, low-latency connectivity between NVIDIA Mellanox networking equipment. **Technical Excellence:** Manufactured to IEEE 802.3cd and QSFP56 MSA/CMIS specifications, this cable supports 200GB data transfer rates with minimal signal degradation. The 26AWG twinax copper construction ensures optimal electrical characteristics and thermal stability across extended distances, while the protective plastic jacketing provides durability in challenging network environments. **Superior Compatibility:** This cable directly replaces the NVIDIA Mellanox MCA1J00-H006E part number, ensuring seamless integration with existing infrastructure. QSFP56 connectors on both ends provide secure, reliable connections with copper contacts that maintain integrity under frequent mating cycles. **Enterprise-Grade Standards:** Fully compliant with RoHS, TUV, and UL certifications, this cable meets EU Directive 2002/95/EC environmental standards. Operating temperature range from 0-70°C ensures consistent performance in varied data center conditions. **Ideal Applications:** Perfect for high-performance computing clusters, cloud infrastructure, financial trading systems, and large-scale data processing environments requiring maximum throughput and minimal latency. The direct attach topology eliminates transceiver costs while reducing power consumption compared to active optical solutions. **Quality Assurance:** Backed by a 90-day limited warranty and available for custom brand programming. Ships from US locations (Danville, CA or Beaufort, SC) with free standard shipping on orders over $99.