The JBX05870 1-meter Cisco Compatible 100GBASE-CR4 QSFP28 passive direct attach copper cable represents the pinnacle of high-speed data center connectivity. Designed specifically for enterprises requiring robust, reliable 100GB Ethernet transmission, this professional-grade cable combines advanced engineering with proven compatibility across Cisco's extensive networking ecosystem. **Technical Excellence** Constructed with 30AWG twinax copper cable and QSFP28 connectors on both ends, this DAC cable meets all IEEE 802.3bj and QSFP28 MSA specifications. The passive direct attach design eliminates external power requirements, reducing complexity and potential points of failure in your network infrastructure. Each cable undergoes rigorous testing to ensure compliance with international standards including RoHS, ELV, and EU Directive 2002/95/EC. **Superior Performance Characteristics** With a 1-meter length optimized for rack-to-rack and switch-to-switch connections, this cable delivers exceptional signal integrity without signal conditioning. The 30AWG gauge provides the perfect balance between flexibility and durability, while copper construction ensures excellent electrical conductivity. Operating reliably across temperatures from 0-70°C (32-158°F), it performs consistently in demanding data center environments. **Enterprise-Grade Reliability** As a direct replacement for Cisco OEM part numbers QSFP-100G-CU1M and MA-CBL-100G-1M, this cable integrates seamlessly into existing infrastructure. Backed by a comprehensive 90-day limited warranty, you have complete peace of mind. The cable features TUV and UL safety certifications, meeting the stringent requirements of modern enterprise deployments. **Ideal Applications** Perfect for data center upgrades, high-performance computing clusters, storage area networks, and enterprise switching fabrics requiring 100GB connectivity. The compact 12x12x2mm form factor fits easily in cable management systems without creating bottlenecks. **Value Proposition** With free standard shipping on orders over $99 and competitive pricing, this genuine-quality DAC cable provides exceptional value. Custom brand programming is available for OEM integrators and enterprise procurement teams. Ships rapidly from Danville, CA or Beaufort, SC distribution centers.