The JBX05771 2-meter 100GBASE-CR4 QSFP28 passive direct attach copper cable represents a professional-grade networking solution designed specifically for Juniper-compatible infrastructure. This twinax cable enables high-speed, low-latency data transmission essential for modern data centers, cloud computing environments, and enterprise networks. **Technical Specifications:** Designed to IEEE 802.3bj standards and QSFP28 MSA specifications, this cable supports 100GB data rates with 28AWG twinax copper conductors. The passive DAC (Direct Attach Copper) architecture eliminates external power requirements and heat generation, reducing operational costs and complexity. The 2-meter length optimizes short-range interconnections between network switches, servers, and storage systems within standard rack configurations. **Compatibility & Integration:** Fully compatible with Juniper QFX series switches and other 100GBASE-CR4-compliant equipment, this cable replaces OEM part numbers QFX-QSFP28-DAC-2M and JNP-100G-DAC-2M. QSFP28 connectors provide secure connections with minimal signal loss, ensuring consistent performance in demanding environments. **Quality & Compliance:** Manufactured to strict quality standards with RoHS, TUV, and UL certifications, this cable meets EU Directive 2002/95/EC requirements. The durable plastic jacketing protects against physical damage while maintaining flexibility for installation in tight spaces. Operating temperature range of 0-70°C ensures reliable performance across diverse environmental conditions. **Advantages Over Alternatives:** Unlike active DACs or optical solutions, passive DACs offer superior cost-efficiency, lower power consumption, and reduced maintenance requirements. The 28AWG gauge provides an optimal balance between flexibility and signal integrity. With a 90-day limited warranty and free standard shipping on orders exceeding $99, this cable delivers exceptional value for budget-conscious IT professionals. **Applications:** Ideal for data center rack interconnects, high-performance computing clusters, enterprise network upgrades, and disaster recovery implementations requiring reliable 100GB connectivity without excessive infrastructure investment.