The JBX05520 3-meter QSFP28 direct attach copper (DAC) breakout cable represents a cost-effective, high-performance solution for modern data center connectivity. Engineered as a drop-in replacement for the Cisco QSFP-2QSFP50G-CU3M, this cable delivers reliable 100GB transmission speeds without the complexity and expense of active components. **Technical Excellence** Built to IEEE 802.3bj specifications and QSFP28 MSA standards, this cable ensures interoperability across leading networking equipment. The passive breakout design eliminates power consumption and heat generation, making it ideal for densely populated switch environments. The 26AWG twinax copper construction provides optimal signal integrity over the 3-meter distance, while the plastic jacketing offers durability and flexibility. **Compliance & Certification** Fully RoHS and ELV directive compliant, this cable meets stringent environmental and safety standards. TUV and UL certifications guarantee quality and reliability. The 0-70°C operating temperature range accommodates standard data center conditions without performance degradation. **Ideal Applications** Deploy this cable in: • Enterprise data center core and aggregation layers • Cloud computing infrastructure • High-frequency trading environments • Storage area networks (SAN) • Server-to-switch connectivity • Switch-to-switch uplinks **Value Proposition** Compared to fiber optic alternatives, this DAC cable offers significantly lower cost, simpler installation, and lower latency. Unlike longer copper cables, the optimized 26AWG gauge and 3-meter length eliminate signal degradation while maintaining compatibility with existing Cisco infrastructure. **Warranty & Support** Each cable includes a 90-day limited warranty, backed by our customer service team. Ships from multiple U.S. locations (Danville, CA and Beaufort, SC) with free standard shipping on orders exceeding $99. Custom brand programming is available for organizations seeking standardized deployments.