The JBX05675 4m 100GBASE-CR4 QSFP28 Passive Direct Attach Copper Cable represents a cost-effective and reliable solution for high-speed network connectivity. Engineered to Fortinet specifications, this cable delivers consistent 100Gbps performance in demanding data center and enterprise environments. **Product Overview:** This passive DAC cable eliminates the complexity and cost of active electronics while maintaining exceptional signal quality. The 26AWG twinax copper construction provides optimal electrical characteristics for high-speed data transmission, making it ideal for short-distance connections up to 4 meters. **Key Technical Specifications:** - Connector Type: QSFP28 (Quad Small Form Factor Pluggable) - Cable Length: 4 meters - Data Rate: 100Gbps (100GBASE-CR4) - Gauge: 26AWG twinax - Materials: Copper conductors with plastic jacketing - Operating Temperature: 0-70°C (32-158°F) - Standards Compliance: IEEE 802.3bj, QSFP28 MSA, SFF-8665 **Advantages of Passive DAC Technology:** Unlike active cables requiring power, passive DACs offer superior reliability with zero power consumption. This results in lower total cost of ownership, simpler installation, and reduced heat generation—critical factors in dense data center deployments. **Compatibility & Applications:** - OEM Replacement: Direct replacement for Fortinet FN-CABLE-QSFP28-4 - Ideal for: Data center switches, high-performance computing, storage arrays, and enterprise networking - Perfect for: Short-hop connections requiring maximum reliability **Certifications & Quality Assurance:** - RoHS/ELV compliant (EU Directive 2002/95/EC) - UL and TUV certified for safety - 90-day limited warranty - Custom brand programming available **Shipping & Support:** Enjoy free standard shipping on orders over $99 with shipment from multiple U.S. locations (Danville, CA and Beaufort, SC). This ensures faster delivery and reliable logistics support. Invest in proven, standards-compliant connectivity with the JBX05675—the smart choice for organizations demanding reliable 100GB Ethernet performance at competitive pricing.