The JBX05352 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents the ideal solution for organizations requiring cost-effective, high-speed data center interconnectivity. At 1.5 meters, this Cisco-compatible cable bridges the distance between closely positioned network equipment without introducing unnecessary latency or signal degradation inherent in longer cable runs. **Technical Excellence** Manufactured to IEEE 802.3ba and SFF-8436 specifications, this passive DAC cable delivers consistent 40Gbps performance. The 30AWG twinax copper construction provides superior electrical properties, with each conductor pair twisted and shielded to minimize crosstalk and maintain signal integrity across the entire 1.5-meter span. The plastic jacket offers mechanical protection while maintaining flexibility for installation in constrained spaces. **Performance Benefits** Passive DAC technology eliminates active components, resulting in zero power consumption and inherent reliability. Unlike fiber alternatives, copper DAC cables require no transceivers or active equalization, reducing total cost of ownership. The direct attach design provides point-to-point connectivity with minimal latency, critical for latency-sensitive applications including high-frequency trading, real-time analytics, and cloud computing. **Compatibility & Standards** Fully compatible with Cisco QSFP+ ports, this cable directly replaces OEM part numbers QSFP-H40G-CU1-5M and MA-CBL-40G-150CM. Compliance certifications include RoHS (EU directive 2002/95/EC), TUV, and UL standards, ensuring regulatory approval across global markets. **Deployment Advantages** Ideal for switch-to-switch, switch-to-server, and server-to-storage connections in virtualized environments. The 1.5-meter length accommodates typical Top-of-Rack (ToR) configurations and inter-cabinet connections within standard data center aisles. Operating temperature range of 0-70°C supports both climate-controlled data centers and edge computing locations. **Warranty & Support** 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 exceeding $99.