The JBX05226 3m Direct Attach Copper (DAC) cable represents an excellent solution for organizations seeking reliable, cost-effective 40GB network connectivity. This QSFP+ to 4x SFP+ breakout cable is specifically designed to meet the demanding requirements of modern data center environments while maintaining full compatibility with Extreme Networks infrastructure. **Technical Specifications:** This passive breakout DAC cable delivers 40GBASE-CR4 performance using quality copper twinax construction with 30AWG gauge, providing optimal signal integrity over its 3-meter span. The cable supports data rates of 40GB and operates reliably within a 0-70°C temperature range, suitable for both in-rack and near-rack deployment scenarios. The QSFP+ connector interfaces with industry-standard SFP+ ports, enabling flexible port expansion and network scaling. **Compliance & Certification:** Fully compliant with IEEE 802.3ba specifications and RoHS/ELV directives, this cable meets rigorous EU safety standards. With TUV and UL certifications, it ensures safe operation in diverse enterprise environments. The robust safety certifications provide peace of mind for mission-critical deployments. **Key Advantages:** As a passive cable, it eliminates active power requirements and associated heat generation, reducing operational costs and improving reliability. The 3-meter length strikes an optimal balance for typical data center rack-to-switch distances without excessive signal degradation. The breakout configuration allows single 40GB QSFP+ ports to expand into four 10GB SFP+ connections, maximizing existing port utilization. **Applications:** Ideal for enterprise data centers, cloud infrastructure, high-performance computing clusters, and network virtualization environments. Perfect for organizations upgrading from 10GB to 40GB connectivity while leveraging existing SFP+ equipped infrastructure. **Warranty & Support:** 90-day limited warranty provides confidence in your investment. Ships from US locations (Danville, CA and Beaufort, SC) with free standard shipping on orders over $99, ensuring fast delivery and cost-effective procurement. **Compatibility:** Replaces Extreme Networks part number 40G-DACP-QSFP4SFP3M and equivalent OEM alternatives, ensuring seamless integration with your existing network infrastructure.