The JBX05388 1m HPE-compatible 40GBASE-CR4 QSFP+ passive direct attach copper cable represents a superior networking solution for organizations demanding high-performance, cost-effective data center connectivity. This cable delivers exceptional value for enterprise environments where reliable 40Gbps connections are essential. **Technical Excellence** Qualified to IEEE 802.3ba standards with SFF-8436 compliance, this passive DAC cable utilizes premium copper construction with 30AWG gauge conductors. The twinax design minimizes electromagnetic interference while maintaining signal integrity over the full 1-meter length. Unlike active cables, the passive architecture requires no power supply, reducing overall system complexity and operational expenses. **HPE Compatibility & OEM Replacement** Direct replacement for HPE part numbers 498385-B21 and AT095A, ensuring seamless integration with existing HPE infrastructure. Verified compatibility with HPE networking equipment guarantees proper functionality and eliminates compatibility concerns. **Certifications & Reliability** Fully RoHS compliant (EU directive 2002/95/EC) and TUV/UL certified, this cable meets stringent environmental and safety standards. The robust plastic jacketing provides protection against physical damage while maintaining flexibility for installation in tight spaces. Backed by a 90-day limited warranty. **Performance Specifications** Operates reliably across standard data center temperatures (0-70°C). The 40GBASE-CR4 standard supports concurrent multi-lane transmission, perfect for demanding applications including server-to-switch, switch-to-switch, and storage connectivity. **Ideal Applications** Perfect for virtualization infrastructure, cloud computing environments, high-frequency trading platforms, and backup/disaster recovery systems. The cost advantage of passive DAC over active solutions makes this cable particularly valuable for large-scale deployments. **Availability & Support** Shipped from multiple US locations (Danville, CA and Beaufort, SC) with free standard shipping on orders over $99. Custom brand programming available for OEM requirements.