The JBX05521 3-meter 100GBASE-CR2 QSFP28 to 2x QSFP28 Direct Attach Copper Cable represents a premium solution for high-speed data center interconnectivity. This passive breakout cable is specifically designed to replace Extreme Networks part number 10428 while offering exceptional value and performance. **Technical Specifications:** This cable operates at 100GB data rates and features 26AWG twinax construction with copper conductors encased in protective plastic jacketing. The single QSFP28 input connector breakouts into dual QSFP28 outputs, providing flexible configuration options for modern network architectures. With a 3-meter length, it accommodates mid-range rack-to-rack connections common in enterprise environments. **Performance & Compatibility:** Fully qualified to IEEE 802.3bj and QSFP28 MSA (SFF-8665) standards, this cable guarantees reliable performance across compatible platforms. Its Extreme Networks compatibility ensures seamless integration with existing infrastructure without compatibility concerns. The passive design eliminates power requirements, reducing operational complexity and associated cooling costs. **Environmental Compliance:** Manufactured with RoHS and ELV compliance, this cable meets stringent EU directive 2002/95/EC requirements. Safety certifications include RoHS, TUV, and UL validation, ensuring reliability and workplace safety. Operating temperature range of 0-70°C (32-158°F) supports both standard and demanding thermal environments. **Practical Benefits:** As a passive DAC solution, this cable offers superior performance compared to active alternatives—lower latency, zero power consumption, and reduced heat generation make it ideal for power-conscious data centers. The breakout configuration enables efficient port aggregation and flexible network topology designs without requiring additional active components. **Warranty & Support:** Backed by a 90-day limited warranty and available with custom brand programming options, this cable offers flexibility for enterprise deployments. Ships with free standard shipping from US locations (Danville, CA and Beaufort, SC), ensuring quick delivery and minimized project delays. **Ideal Applications:** Perfect for hyperscale data centers, cloud service providers, financial institutions, and enterprise networks requiring reliable 100GB connectivity at competitive pricing. Whether upgrading existing Extreme Networks infrastructure or expanding data center capacity, this QSFP28 DAC cable delivers enterprise-grade performance and dependable connectivity.