The JBX05640 1m 100GBASE-CR4 QSFP28 to 4x SFP28 direct attach copper breakout cable represents a cost-effective solution for enterprise networking infrastructure requiring 100GB connectivity. Designed as a drop-in replacement for OEM part numbers MCP7F00-A001, 980-9I486-00C001, and MCP7F00-A001R30N, this passive breakout cable eliminates the need for active electronics, reducing power consumption and heat generation. Key Features: - 1-meter length optimized for rack-to-rack and short-distance interconnects - 100GBASE-CR4 standard compliance for maximum compatibility - Passive design reduces latency and operational complexity - 30AWG twinax copper construction for superior signal integrity - QSFP28 primary connector with four SFP28 breakout connections Technical Specifications: Fully qualified to IEEE 802.3bj standards and QSFP28 MSA requirements. Operating temperature range of 0-70°C supports diverse data center environments. RoHS and ELV directive 2002/95/EC compliance ensures environmental responsibility. UL and TUV safety certifications validate manufacturing quality and reliability. Applications: Ideally suited for NVIDIA Mellanox switch interconnections, high-performance computing clusters, and data center networks requiring multi-gigabit aggregate bandwidth. The breakout configuration enables flexible port-to-port connectivity without additional infrastructure investment. Quality Assurance: 90-day limited warranty provides peace of mind. Copper connectors feature precision engineering for reliable mating cycles and consistent performance. Plastic jacketing protects against environmental hazards while maintaining cable flexibility. Shipping & Support: Ships from Danville, CA and Beaufort, SC locations. Free standard shipping applies to orders exceeding $99. Custom brand programming available for enterprise customers. Harmonization code 8544.42.9090 ensures proper customs classification for international orders.