The JBX06439 1-meter 25GBASE-CR SFP28 passive direct attach copper cable represents the latest in high-speed network connectivity solutions. Engineered specifically for Extreme Networks platforms, this cable delivers reliable 25GB per second data transmission while maintaining exceptional signal integrity and durability. **Technical Specifications:** This premium-grade passive DAC cable features 30AWG twinax copper conductors encased in protective plastic jacketing, providing optimal impedance matching and minimal signal loss. The cable measures 12mm x 12mm x 2mm, making it compact and ideal for dense network deployments. With a 1-meter length, it accommodates both short-reach and intermediate-distance interconnections within data center environments. **Standards Compliance:** Fully qualified to IEEE 802.3by specifications, the cable meets stringent international standards including SFF-8402 and SFF-8472. Safety certifications include RoHS compliance (EU Directive 2002/95/EC), TUV, and UL approvals, ensuring environmental responsibility and workplace safety. **Performance Benefits:** As a passive direct attach solution, this cable eliminates active electronic components, resulting in lower power consumption, reduced operating temperature, and enhanced reliability. It's an excellent choice for connecting switches, servers, and storage devices within high-performance computing clusters. **Compatibility & Replacement:** Seamlessly compatible with Extreme Networks infrastructure, the JBX06439 replaces OEM part numbers 25G-DACP-SFP1M, 25G-SFP28-TWX-P-0101, and 10520. Enterprise customers can take advantage of custom brand programming options for unified network solutions. **Operational Environment:** With a wide operating temperature range of 0-70°C (32-158°F), this cable performs reliably in diverse data center conditions. Manufactured in Vietnam and China with quality assurance standards, it ships from Danville, CA and Beaufort, SC locations for rapid delivery. **Value Proposition:** The JBX06439 combines enterprise-grade reliability with cost-effectiveness. Free standard shipping on orders exceeding $99 provides additional value, while the 90-day limited warranty offers peace of mind. Whether upgrading legacy infrastructure or expanding data center capacity, this passive DAC cable delivers the performance, compatibility, and durability enterprise networks demand.