The JBX05782 3-Meter Cisco Compatible 100GBASE-CR4 QSFP28 Passive Direct Attach Copper Cable represents a high-quality, cost-effective solution for modern data center infrastructure. Designed to meet the rigorous demands of enterprise-grade networking, this passive DAC cable delivers exceptional performance and reliability for 100GB interconnections. **Technical Specifications:** This cable features QSFP28 copper connectors on both ends, supporting the 100GBASE-CR4 standard for 100GB Ethernet transmission. The 28AWG twinax copper construction ensures optimal signal quality and reduced electromagnetic interference. With dimensions of 12x12x3 inches and a 3-meter length, it's perfectly suited for short-to-medium distance connections within data centers and server racks. **Standards & Compliance:** The JBX05782 is qualified to IEEE 802.3bj specifications and QSFP28 MSA standards, ensuring compatibility with Cisco equipment and other industry-standard switches and network adapters. The cable meets RoHS and ELV directives, TUV, and UL safety certifications, making it suitable for regulated environments. **Advantages of Passive DAC Technology:** Passive direct attach cables eliminate the need for active electronics, resulting in lower power consumption, reduced heat generation, and minimal latency. This makes them ideal for power-conscious data centers while providing reliable, high-speed connectivity. The passive design also eliminates compatibility concerns with active cable variations. **Applications:** Perfect for connecting high-density switch fabrics, connecting servers to storage systems, and establishing backbone connections in data center environments. Compatible with Cisco Nexus switches, MDS fabric switches, and other enterprise networking equipment. **Warranty & Support:** Backed by a 90-day limited warranty and custom brand programming options available. Ships from Danville, CA and Beaufort, SC warehouses, ensuring fast delivery to most locations. Free standard shipping on orders exceeding $99. **Replacement Compatibility:** Direct replacement for Cisco OEM part numbers QSFP-100G-CU3M and MA-CBL-100G-3M, offering significant cost savings without compromising performance or reliability. Manufactured to ISO standards in Vietnam and China, ensuring consistent quality.