The JBX05434 2-meter Cisco Compatible 40GBASE-CR4 QSFP+ Passive Direct Attach Copper Cable represents an optimal balance of performance, reliability, and cost-effectiveness for modern data center infrastructure. **Product Overview** This high-speed network cable is specifically designed for 40 Gigabit Ethernet applications requiring short to medium-distance connections within data centers, server rooms, and enterprise networks. The passive direct attach architecture eliminates the need for external power supplies, reducing complexity and operational costs compared to active optical cables. **Technical Excellence** Manufactured from high-quality copper with 30AWG twinax construction, this cable delivers superior signal integrity and minimal signal loss. It fully complies with IEEE 802.3ba specifications and supports the 40GBASE-CR4 standard for copper-based 40GB connections. The QSFP+ form factor provides universal compatibility with standard network switches and routers. **Key Advantages** - **Cost-Effective**: Passive technology eliminates expensive active transceivers - **Power-Free Operation**: No additional power consumption or cooling requirements - **Cisco Native Compatibility**: Certified to work with Cisco infrastructure - **Reliable Connectors**: Gold-plated QSFP+ connectors ensure secure connections - **Wide Temperature Range**: Operates reliably from 0-70°C **Compliance & Safety** This cable meets RoHS/ELV and EU Directive 2002/95/EC environmental standards. It carries UL and TUV safety certifications, demonstrating rigorous quality assurance. The backing of these certifications ensures safe operation in professional environments. **Use Cases** Perfect for: server-to-switch connections, switch-to-switch uplinks, storage area network (SAN) deployments, and high-performance computing clusters. IT professionals appreciate its direct compatibility with existing Cisco infrastructure. **Warranty & Support** Backed by a 90-day limited warranty and available for custom brand programming. Ships from US locations (Danville, CA or Beaufort, SC) with free standard shipping on orders over $99. **Why Choose This Cable?** When upgrading or expanding your 40GB network infrastructure, this cable offers plug-and-play compatibility, exceptional reliability, and significant cost savings compared to active alternatives. The 2-meter length accommodates most rack configurations while maintaining optimal signal quality.