The JBX06139 0.5m Cisco Compatible 10GBASE-CR SFP+ Active Direct Attach Copper Cable represents the ideal solution for network professionals seeking reliable, cost-effective 10GB connectivity in data center and enterprise environments. **Superior Performance & Design** Engineered with active DAC technology, this cable delivers consistent 10GB data rates across its 0.5-meter length. The 30AWG twinax copper construction provides excellent signal integrity while minimizing crosstalk and electromagnetic interference. Each conductor is precision-engineered to meet IEEE 802.3ae and SFF standards, ensuring compatibility with Cisco equipment and other 10GBASE-CR compatible devices. **Technical Excellence** This active direct attach cable operates reliably across temperatures from 0°C to 70°C (32°F to 158°F), making it suitable for diverse deployment environments. The SFP+ connector form factor ensures seamless integration with existing infrastructure without requiring additional transceivers or modules. The cable's compact 0.5-meter length is perfectly suited for short-distance connections such as server-to-switch, switch-to-switch, and server-to-server applications within data centers. **Compliance & Reliability** Fully RoHS compliant and TUV certified, this cable meets EU Directive 2002/95/EC standards. The 90-day limited warranty provides peace of mind, while the direct replacement compatibility with Cisco OEM part number SFP-H10GB-ACU50CM ensures drop-in compatibility with existing systems. **Cost-Effective Alternative** Compared to optical DAC solutions, active copper DACs like the JBX06139 offer exceptional value without compromising performance. This makes them the preferred choice for budget-conscious enterprises and service providers managing high-density data centers. **Shipping & Support** Available with free standard shipping on orders exceeding $99. Ships from multiple U.S. locations (Danville, CA and Beaufort, SC) for faster delivery. Custom brand programming available upon request for OEM requirements.