The JBX05386 1-meter 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents an exceptional choice for enterprises and data centers requiring high-speed, cost-effective network interconnectivity. This specialized cable is engineered to deliver 40GB Ethernet speeds using passive copper technology, eliminating the need for active electronics and associated power consumption. **Technical Specifications:** Built to IEEE 802.3ba standards and SFF-8436 specifications, this cable features precision-engineered QSFP+ connectors on both ends, ensuring secure, low-loss connections. The 30AWG twinax copper construction provides optimal signal integrity while maintaining flexibility for installation in dense networking environments. Dimensions of 12x12x2 inches accommodate standard rack configurations. **Performance & Reliability:** Passive DAC technology delivers ultra-low latency performance ideal for latency-sensitive applications like high-frequency trading, real-time data analytics, and virtualized environments. The cable maintains performance across operating temperatures from 0 to 70°C (32 to 158°F), supporting both climate-controlled data centers and field deployments. **Compatibility & Integration:** Specifically designed for Fortinet compatibility, this cable directly replaces OEM part numbers FN-CABLE-QSFP+1 and SP-CABLE-FS-QSFP+1, ensuring seamless integration without firmware or configuration changes. The 1-meter length provides optimal cabling distance for top-of-rack and mid-row switch connections. **Compliance & Safety:** Full RoHS and TUV certification ensures environmental responsibility and safety compliance. The cable meets EU directive 2002/95/EC requirements, making it suitable for regulated industries and environmentally conscious organizations. **Shipping & Support:** Enjoy free standard shipping on orders exceeding $99. Ships from multiple US locations (Danville, CA and Beaufort, SC) for faster delivery. Every cable includes a comprehensive 90-day limited warranty. Custom brand programming is available for OEM and volume purchases. **Why Choose This Cable?** Unlike active optical cables (AOC), this passive solution offers superior cost efficiency, longer lifespan, and simplified troubleshooting. Perfect for budget-conscious enterprises upgrading to 40GB infrastructure without sacrificing performance or reliability.