The JBX05692 4-meter 100GBASE-CR4 QSFP28 passive direct attach copper cable represents a high-value solution for modern data center networking requirements. Designed with precision engineering, this cable utilizes 26AWG twinax copper conductors enclosed in protective plastic jacketing, delivering consistent 100GB per second data transmission over its 4-meter length. **Key Features & Specifications:** This passive DAC cable features QSFP28 connectors on both ends, providing tool-free hot-pluggable installation. Unlike active cables, the passive design eliminates external power requirements, reducing complexity and potential points of failure. Operating across the full IEEE 802.3bj specification range, it maintains signal integrity for enterprise-grade applications. The cable's 26AWG gauge provides optimal balance between flexibility and performance. **Compatibility & Integration:** Fully qualified for Ruckus networking platforms, this cable directly replaces Ruckus OEM part number E100G-QSFP-QSFP-P-0401. It's compatible with all QSFP28 MSA-compliant equipment, making it a versatile choice for mixed-vendor environments. The standardized form factor ensures seamless integration with existing infrastructure. **Quality & Compliance:** RoHS and TUV certified, meeting EU directive 2002/95/EC requirements for hazardous substance restrictions. The cable operates reliably in environmental conditions from 0 to 70°C, suitable for both standard and temperature-controlled data center environments. Each unit includes a 90-day limited warranty, reflecting manufacturer confidence in product durability. **Applications:** Ideal for equipment interconnects, switch-to-server connections, and storage area network (SAN) deployments requiring cost-effective high-speed connectivity. The 4-meter length accommodates standard rack-to-rack and adjacent equipment spacing in data center layouts. Passive DAC technology eliminates power consumption associated with active solutions, supporting green IT initiatives. **Why Choose This Cable:** Passive DACs offer superior cost-effectiveness compared to active optical cables while maintaining performance over moderate distances. The absence of active circuitry means no heat generation, no power draw, and no potential firmware compatibility issues. For data center operators managing bandwidth-intensive applications, this solution delivers reliable 100GB connectivity with minimal operational overhead.