The JBX06367 4m HPE-compatible 25GBASE-CR SFP28 passive DAC cable is engineered for demanding high-speed networking applications requiring reliable, cost-effective connectivity solutions. This passive direct attach copper cable eliminates the need for expensive active electronics while delivering exceptional performance in data center environments. **Key Features:** This 4-meter cable utilizes 26AWG twinax copper construction, providing superior signal integrity and minimal electromagnetic interference. The SFP28 to SFP28 connectors ensure seamless compatibility with HPE network infrastructure and switches. Qualified to IEEE 802.3by and SFF-8402 standards, it guarantees interoperability and performance consistency across diverse networking architectures. **Technical Specifications:** Operating temperature range: 0 to 70°C (32 to 158°F) Data rate: 25Gbps Gauge: 26AWG twinax Form factor: SFP28 Compliance: RoHS, TUV, UL certified Directive: EU directive 2002/95/EC (RoHS) **Applications & Use Cases:** Ideal for data center deployments, server rack interconnections, storage area networks (SANs), and enterprise networking infrastructure. Perfect for organizations seeking high-performance connectivity without the overhead of active cable solutions. Suitable for both new installations and existing HPE switch replacements. **Advantages Over Alternatives:** Passive DAC cables offer significant cost savings compared to active copper cables and optical solutions, require no external power, generate minimal heat, and deliver reliable performance over short to medium distances (up to 5 meters). This cable replaces OEM part numbers 844474-B21-4M, JL295A-4M, and JL488A-4M. **Quality Assurance:** Backed by a 90-day limited warranty and manufactured with precision engineering. Ships from Danville, CA and Beaufort, SC with free standard shipping on orders over $99. Custom brand programming is available for enterprise customers.