The JBX05277 4-meter 40GBASE-CR4 QSFP+ passive direct attach copper cable is engineered for demanding data center environments requiring high-speed, reliable connectivity. This Dell-compatible solution delivers 40GB transmission speeds using advanced 28AWG twinax copper construction, ensuring optimal signal quality and minimal latency in short-reach networking applications. Key Technical Features: This passive DAC cable operates across the full temperature range of 0-70°C (32-158°F), making it suitable for diverse deployment scenarios. The QSFP+ to QSFP+ copper connectors provide secure, durable connections, while the plastic jacketing protects against environmental factors and physical damage. At 4 meters in length, it's perfectly sized for typical rack-to-rack or switch-to-server configurations without excessive cable runs. Compliance & Certification: The cable meets stringent international standards including IEEE 802.3ba specifications and EU directive 2002/95/EC (RoHS). Safety certifications from TUV and UL ensure compliance with global electrical and safety requirements. These certifications guarantee reliable performance and safety in professional networking environments. Cost-Effective Performance: As a passive solution, this DAC cable requires no external power, reducing operational costs and eliminating potential points of failure associated with active cables. It directly replaces Dell OEM part number 02-SSC-0382-4M, providing seamless compatibility with existing Dell infrastructure. Applications: Ideal for data center interconnects, enterprise network upgrades, switch stacking, and server-to-storage communications. This cable excels in environments where cost efficiency and reliability are paramount. Whether upgrading legacy systems or building new high-speed networks, this QSFP+ DAC cable delivers enterprise-grade performance. Warranty & Support: Every cable includes a 90-day limited warranty, and custom brand programming is available for OEM requirements. With fast shipping from multiple U.S. locations and free standard shipping on orders exceeding $99, acquisition is convenient and economical.