The JBX05669 4-meter 100GBASE-CR4 QSFP28 passive direct attach copper cable represents an optimal solution for organizations seeking reliable, cost-effective high-speed connectivity in data center environments. Specifically engineered for Cisco compatibility, this cable delivers 100 gigabit per second throughput, enabling seamless integration with modern enterprise network infrastructure. Technical Specifications: This passive DAC cable features precision-engineered 26AWG twinax copper conductors enclosed in protective plastic jacketing, ensuring durability and consistent signal integrity over the 4-meter span. The QSFP28 to QSFP28 connector configuration provides direct attachment capabilities without requiring additional transceivers or power supplies, reducing both operational costs and deployment complexity. Compliance and Certification: Fully compliant with IEEE 802.3bj specifications and QSFP28 MSA standards, this cable meets rigorous international safety and environmental standards including RoHS, EU directive 2002/95/EC, UL, and TUV certifications. These qualifications ensure the cable operates safely within regulated industries and meets stringent environmental requirements. Perfect Use Cases: Ideal for connecting high-speed switches, routers, and network equipment within data centers, cloud infrastructure facilities, and large-scale enterprise networks. The passive design eliminates power requirements, making it suitable for environmentally sensitive installations and reducing overall system power consumption. Reliability and Performance: Designed to operate dependably across temperatures from 0 to 70°C (32 to 158°F), this cable maintains consistent performance in various deployment environments. The robust construction and adherence to international standards ensure long-term reliability and minimal signal degradation. Compatibility and Replacement: Direct replacement for Cisco OEM part numbers QSFP-100G-CU4M and MA-CBL-100G-4M, facilitating seamless upgrades within existing Cisco environments. Custom brand programming is available for organizations requiring specialized configurations. Value Proposition: Combining superior build quality, comprehensive certifications, and Cisco compatibility, the JBX05669 delivers exceptional value for organizations prioritizing network performance and reliability. Backed by a 90-day limited warranty and available with free standard shipping on qualifying orders.