The JBX05829 0.5m 100GBASE-CR4 QSFP28 Passive Direct Attach Copper Cable represents cutting-edge networking connectivity for modern data centers. Manufactured to exacting standards in Vietnam and China, this cable delivers exceptional performance in high-speed network environments requiring reliable, low-latency data transmission. **Technical Specifications & Features:** This passive DAC cable features premium 30AWG twinax copper conductors with optimized impedance matching for signal integrity. The QSFP28 to QSFP28 connector configuration ensures seamless integration with compatible networking equipment. Measuring 0.5 meters in length, it's ideal for short-reach applications within server racks and network switches. The compact dimensions (12x12x2mm) facilitate easy cable management and deployment in space-constrained environments. **Performance & Compatibility:** Qualified to IEEE 802.3bj and QSFP28 MSA standards, this cable supports 100Gbps data rates with exceptional reliability. Full Intel compatibility ensures it works seamlessly with Intel-branded and compatible networking infrastructure. The cable replaces OEM part numbers XXLDACBL0-5M, 100CQQH3005, and 100CQQF3005, making it an excellent substitute for existing deployments. **Compliance & Safety:** Fully RoHS and ELV compliant under EU directive 2002/95/EC, this cable meets environmental and safety requirements for global deployment. Multiple safety certifications including TUV and UL underscores its quality and reliability. Operating across 0-70°C temperature ranges ensures performance in diverse data center conditions. **Practical Benefits:** The passive design provides significant cost savings compared to active solutions while maintaining exceptional performance. No power requirements simplify deployment and reduce operational complexity. The included 90-day limited warranty provides peace of mind, and free standard shipping on orders over $99 delivers exceptional value. **Ideal Applications:** Perfect for interconnecting 100G-capable switches, routers, and server network adapters. Commonly used in hyperscale data centers, enterprise networking, high-performance computing clusters, and virtualized infrastructure environments. Whether upgrading legacy networks or deploying new high-speed infrastructure, this cable provides reliable connectivity backed by industry standards and certifications.