The JBX06434 1m Cisco Compatible 25GBASE-CR SFP28 Passive Direct Attach Copper Cable represents an industry-standard solution for high-speed data center networking infrastructure. Designed to meet the demanding requirements of modern network environments, this cable delivers reliable 25 Gigabit Ethernet connectivity while maintaining cost-effectiveness and operational efficiency. ## Technical Excellence This passive DAC cable eliminates the need for active electronic components, reducing power consumption and heat generation—critical factors in densely packed server environments. The 30AWG twinax copper construction provides superior signal integrity and reduced crosstalk, ensuring reliable data transmission across short-distance interconnects. The SFP28 form factor enables seamless integration with Cisco-compatible networking equipment. ## Compliance and Certification Fully qualified to IEEE 802.3by specifications, this cable meets stringent international standards for electromagnetic compatibility and safety. RoHS, TUV, and UL certifications confirm compliance with EU directive 2002/95/EC and other regulatory requirements, making it suitable for regulated environments including financial institutions, healthcare facilities, and government agencies. ## Optimal Connectivity Solution With a 1-meter length, this cable provides the ideal distance for rack-to-rack connections, switch-to-server links, and storage array interconnections. The SFP28-to-SFP28 configuration offers universal compatibility across Cisco switches, routers, and specialized networking equipment. Operating reliably from 0 to 70°C ensures consistent performance across diverse climate-controlled data center conditions. ## Reliability and Support Backed by a 90-day limited warranty, this cable is engineered for long-term reliability. Ships directly from Danville, CA or Beaufort, SC facilities with free standard shipping on qualifying orders. Custom brand programming is available for enterprise deployments requiring specific labeling or certification documentation. ## Why Choose This Cable Unlike optical alternatives, passive DAC cables eliminate transceiver costs while delivering equivalent performance for short-range applications. The durable plastic jacket protects against environmental hazards while maintaining flexibility for installation in congested cabinet environments. This cable represents the proven choice for IT professionals optimizing network infrastructure investment.