The JBX05174 5-meter 40GBASE-CR4 Direct Attach Copper (DAC) cable represents an essential infrastructure component for modern data centers and high-performance computing environments. Specifically engineered as a drop-in replacement for NVIDIA Mellanox MC2609125-005 cables, this passive breakout DAC delivers exceptional reliability and performance without the complexity of active components. **Technical Excellence and Specifications:** This 5-meter cable features advanced 26AWG twinax copper construction, providing optimal impedance matching and signal integrity for 40 Gbps data transmission. The QSFP+ male connector breakouts into four SFP+ connections, enabling flexible port density management in switch architectures. With passive design architecture, the cable requires no external power, reducing operational costs and simplifying deployment. **Compliance and Certification:** Fully compliant with RoHS (Directive 2002/95/EC) and ELV standards, the cable meets stringent environmental and safety requirements. IEEE 802.3ba and SFF-8436 qualification ensures compatibility with industry-standard equipment. TUV and UL safety certifications provide confidence in electrical safety and reliability across varying operational conditions. **Ideal Applications:** Perfect for data center networking, high-frequency trading environments, server interconnects, and enterprise storage networks. The 5-meter length balances flexibility with signal integrity, suitable for both short-range rack connections and modest inter-cabinet deployments. Compatible with NVIDIA Mellanox switches and network interfaces, this cable integrates seamlessly into existing infrastructure. **Durability and Support:** Constructed with quality copper connectors and durable plastic jacketing, the cable withstands the demands of production environments. Operating temperature range of 0-70°C ensures consistent performance in climate-controlled data centers. Backed by a 90-day limited warranty, ensuring customer confidence in product quality and manufacturer support. Available for custom brand programming and drop-ship ready from multiple US locations.