The JBX05162 4-meter 40GBASE-CR4 QSFP+ to 4x SFP+ Passive Breakout DAC Cable represents a cost-effective and reliable solution for modern data center connectivity needs. This direct attach copper cable is specifically engineered to provide seamless compatibility with NVIDIA Mellanox networking infrastructure, serving as an ideal replacement for the OEM part MC2609130-004. **Key Technical Features:** This passive breakout cable utilizes premium 26AWG twinax copper conductors that deliver robust 40Gbps performance without requiring active electronics or external power supplies. The QSFP+ connector breakout design allows a single high-speed port to connect to four independent SFP+ ports, maximizing port density and flexibility in network architectures. At 4 meters in length, this cable provides excellent reach for medium-distance data center interconnects while maintaining signal integrity. **Performance & Reliability:** Fully qualified to IEEE 802.3ba specifications, the cable guarantees reliable operation in demanding enterprise environments. The copper construction with protective plastic jacketing provides superior EMI shielding and mechanical protection. Operating temperature range of 0-70°C ensures stable performance across diverse installation scenarios. Multiple safety certifications including RoHS, TUV, and UL compliance demonstrate adherence to international standards. **Applications:** Ideal for connecting high-speed switches to servers, storage systems, and network appliances. Commonly deployed in enterprise data centers, cloud infrastructure, and high-performance computing clusters. Perfect for organizations standardized on Mellanox networking equipment seeking cost-effective connectivity solutions. **Business Advantages:** As a passive solution, this cable eliminates power consumption associated with active adapters. The 4-meter length reduces clutter while maintaining performance, and compatibility with existing Mellanox infrastructure ensures seamless integration. Ships from multiple U.S. locations (CA and SC) with free standard shipping on orders over $99. Backed by a 90-day limited warranty and custom brand programming availability for enterprise deployments.