The JBX05843 1.5-meter 100GBASE-CR4 QSFP28 passive direct attach copper cable represents an essential infrastructure component for modern data centers and enterprise networks requiring high-speed, reliable connectivity. This Cisco-compatible cable delivers 100Gbps performance using proven passive technology, eliminating the need for active components while maintaining exceptional signal integrity. Construction and Materials: Crafted with premium 30AWG twinax copper conductors and protective plastic jacketing, this cable provides optimal performance for short-reach interconnections. The dual-pair design ensures balanced signal transmission and minimizes crosstalk, critical for maintaining data integrity at 100Gbps speeds. The compact 12x12x2mm dimensions facilitate easy cable management in densely populated switch environments. Technical Specifications: Fully qualified to IEEE 802.3bj specifications and QSFP28 MSA standards, the cable supports native 100GBASE-CR4 protocols. QSFP28-to-QSFP28 copper connectors enable direct module-to-module connectivity without requiring transceiver modules, reducing overall system cost and complexity. Operating temperature range of 0-70°C accommodates standard data center environments. Compliance and Certification: RoHS and TUV certified, compliant with EU Directive 2002/95/EC, and UL listed for safety assurance. These certifications ensure environmental responsibility and reliability in enterprise deployments. Compatibility and Applications: Designed specifically for Cisco platforms, this cable replaces OEM part numbers QSFP-100G-CU1-5M and MA-CBL-100G-150CM. Ideal applications include: data center switch interconnections, network equipment clustering, high-performance computing infrastructure, and enterprise network backbone connections requiring short-distance 100GB links. Value Proposition: Passive DAC technology eliminates power consumption and heat generation associated with active cables, improving total cost of ownership. The 1.5-meter length offers ideal reach for typical rack-to-rack and switch-to-switch connections. Backed by a 90-day limited warranty and free standard shipping on orders exceeding $99, this cable delivers enterprise-grade reliability at competitive pricing. Custom brand programming is available for OEM and large-volume deployments.