The JBX05831 100GBASE-CR4 QSFP28 Passive DAC Cable represents a cost-effective and efficient solution for high-speed network connectivity in modern datacenters and enterprise environments. This 0.5-meter direct attach copper cable delivers exceptional performance for short-reach applications, offering a superior alternative to active optical solutions and longer cable runs. **Key Features:** Passive design eliminates power consumption and heat generation, crucial for reducing operational costs in large-scale deployments. The 30AWG twinax copper construction provides optimal signal integrity while maintaining flexibility for installation in tight spaces. QSFP28 to QSFP28 connectors ensure secure, reliable connections with minimal insertion loss. **Technical Specifications:** Operates at 100GB data rates across a wide temperature range (0-70°C). IEEE 802.3bj qualified construction ensures compatibility with enterprise-grade equipment. The cable meets international standards including RoHS, TUV, and UL certifications, guaranteeing compliance with environmental and safety regulations. **Juniper Compatibility:** Direct replacement for OEM part numbers QFX-QSFP28-DAC-50CM, JNP-100G-DAC-50CM, and QSFP-100G-DAC-50CM. Seamlessly integrates with Juniper QFX5100, QFX5110, QFX5130, and other compatible platforms. **Applications:** Ideal for datacenter interconnects, server-to-switch connections, and switch-to-switch uplinks. The 0.5m length is particularly suited for cabinet-level connections and high-density equipment deployments. **Quality Assurance:** 90-day limited warranty provides peace of mind. Manufactured to exacting standards with RoHS and ELV compliance. Free standard shipping on orders exceeding $99, with fulfillment from strategically located US warehouses in California and South Carolina.