The JBX05219 3-meter QSFP+ to SFP+ breakout DAC cable is specifically designed for data center operators and network engineers requiring high-speed, reliable connectivity between Brocade switches and compatible network infrastructure. This passive direct attach copper cable eliminates the need for active transceivers, reducing both cost and power consumption while maintaining exceptional performance characteristics. **Key Features:** - **40Gbps Performance**: Delivers full 40GBASE-CR4 speeds for demanding applications - **Passive Design**: No active components means lower operational costs and reduced power draw - **Brocade Compatible**: Engineered to replace OEM part number 40G-QSFP-4SFP-C-0301 - **Superior Build Quality**: 30AWG twinax copper with protective plastic jacket ensures durability and longevity - **Standards Compliant**: IEEE 802.3ba certification guarantees interoperability and performance - **Safety Certified**: RoHS, TUV, and UL certifications ensure environmental responsibility and safety **Technical Specifications:** Length: 3 meters | Gauge: 30AWG | Data Rate: 40Gbps | Temperature Range: 0-70°C | Connector Type: QSFP+ to 4x SFP+ | Material: Copper with plastic jacketing | Compliance: RoHS/ELV, EU Directive 2002/95/EC **Applications:** Ideal for data center switching, network backbone interconnects, storage area networks (SANs), and high-performance computing environments where cost-effective, low-latency connectivity is essential. Perfect for Brocade switch deployments requiring port breakout functionality without compromising performance. **Warranty & Support:** 90-day limited warranty included. Ships from US locations (Danville, CA and Beaufort, SC) with free standard shipping on qualifying orders. Custom brand programming available for enterprise clients requiring vendor-specific configurations. **Why Choose This Cable?** Passive DAC cables offer superior performance-to-cost ratios compared to active alternatives, with no latency penalties or transceiver compatibility concerns. This Brocade-qualified solution ensures seamless integration while delivering enterprise-grade reliability your network infrastructure demands.