The JBX05840 0.5m 100GBASE-CR4 QSFP28 passive direct attach copper cable represents the ideal solution for organizations seeking high-performance, cost-effective networking infrastructure. As a passive DAC technology, this cable eliminates the need for expensive optical transceivers while maintaining 100GB transmission speeds, resulting in significant capital expenditure savings without compromising performance. Key Technical Specifications: This 0.5-meter cable features dual QSFP28 connectors, making it universally compatible with Ruckus switches and other QSFP28-equipped networking hardware. The 30AWG twinax copper construction delivers superior signal integrity and reduced latency compared to fiber alternatives for short-distance deployments. The plastic jacketing provides mechanical protection against abrasion and environmental factors while maintaining flexibility for installation in tight rack spaces. Compliance and Certification: Fully qualified to IEEE 802.3bj and QSFP28 MSA standards, this cable meets the stringent requirements of modern data center environments. RoHS and EU directive 2002/95/EC compliance ensures environmental responsibility and regulatory adherence. Comprehensive safety certifications from TUV and UL validate the cable's reliability and safety for enterprise deployment. Optimal Applications: Designed for data center interconnects, server-to-switch connections, and high-speed storage networks, the JBX05840 excels in environments where passive connectivity solutions are preferred. The 0.5-meter length suits rack-mounted equipment within standard networking cabinets. Operating temperature range of 0-70°C accommodates typical data center thermal conditions. Value Proposition: Compared to active optical cables or separate transceiver modules, passive DAC technology reduces system complexity, heat generation, and overall cost. The 90-day limited warranty provides customer confidence, while free standard shipping on orders exceeding $99 enhances affordability. Manufactured in Vietnam and China using proven production standards, this cable delivers consistent quality and reliability for mission-critical network infrastructure investments.