The JBX05313 5-meter 40GBASE-CR4 QSFP+ passive direct attach copper cable represents an essential connectivity solution for modern data centers and high-performance network infrastructures. Specifically designed for Juniper compatibility, this twinax cable delivers exceptional value without sacrificing performance or reliability. **Superior Construction and Materials** Manufactured with precision-engineered 28AWG copper conductors and protective plastic jacketing, the JBX05313 ensures optimal signal transmission and durability. The passive DAC (direct attach copper) design eliminates the need for power-consuming active electronics, reducing operational costs and heat generation in dense network environments. **Performance and Standards Compliance** This cable fully qualifies to IEEE 802.3ba specifications, delivering robust 40GB data rates ideal for demanding applications. It carries comprehensive safety certifications including RoHS, TUV, and UL, meeting EU directive 2002/95/EC requirements. The cable maintains consistent performance across operating temperatures from 0-70°C (32-158°F). **Juniper Ecosystem Compatibility** Precisely engineered to replace OEM part numbers EX-QSFP-40GE-DAC-5M, QFX-QSFP-DAC-5M, and JNP-QSFP-DAC-5M, ensuring seamless integration with existing Juniper infrastructure. QSFP+ to QSFP+ connectors with copper construction guarantee reliable connections. **Ideal Applications** Perfect for server-to-switch connections, switch-to-switch interconnects, and high-speed data center networks. The 5-meter length accommodates standard rack layouts and equipment spacing. **Value and Support** Offering exceptional value compared to active DACs, with free standard shipping on orders exceeding $99. Backed by a 90-day limited warranty. Custom brand programming available for enterprise deployments. Ships from multiple US locations (Danville, CA and Beaufort, SC) ensuring rapid delivery.