The JBX05493 3-meter 40GBASE-CR4 QSFP+ Active Direct Attach Copper Cable represents enterprise-class networking connectivity designed for demanding data center and high-performance computing applications. This twinax cable bridges the gap between cost-effective copper solutions and fiber optics, offering exceptional value for organizations requiring reliable 40GB interconnectivity. **Technical Specifications:** The cable features 30AWG twinax copper conductors with durable plastic jacketing, delivering consistent impedance matching and signal integrity over its 3-meter length. Operating across a temperature range of 0-70°C (32-158°F), it maintains performance stability in various environmental conditions. The QSFP+ to QSFP+ connector configuration ensures compatibility with standard networking equipment. **Performance & Reliability:** As an Active DAC solution, this cable incorporates advanced signal conditioning electronics, enabling reliable data transmission at 40GB speeds across the full 3-meter distance. This active design minimizes signal degradation and eliminates the attenuation challenges associated with passive copper solutions. The cable qualifies to IEEE 802.3ba specifications, ensuring interoperability with standards-compliant equipment. **Certifications & Compliance:** Fully compliant with RoHS (Restriction of Hazardous Substances) and EU Directive 2002/95/EC, this cable meets stringent environmental and safety standards. UL and TUV certifications verify electrical safety and performance reliability. The cable replaces OEM part number E40G-QSFP-QSFP-C-0301, making it an ideal upgrade or replacement solution. **Application Scenarios:** Perfect for switch-to-switch connections, server-to-switch interconnects, and storage area network (SAN) implementations. The Ruckus compatibility designation ensures seamless integration with Ruckus networking infrastructure, supporting organizations leveraging this platform for wireless and wired network deployments. **Convenience & Support:** Ships from U.S. locations (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99. Custom brand programming is available for enterprise deployments requiring specialized configurations. Backed by a comprehensive 90-day limited warranty, ensuring peace of mind for critical network installations.