As data centers continue to scale and demand faster, more reliable connectivity, high-speed copper solutions such as DAC (Direct Attach Cable), ACC (Active Copper Cable), and AEC (Active Electrical Cable) have become critical components in short- to medium-distance. As data centers continue to scale and demand faster, more reliable connectivity, high-speed copper solutions such as DAC (Direct Attach Cable), ACC (Active Copper Cable), and AEC (Active Electrical Cable) have become critical components in short- to medium-distance. As data centers continue to scale and demand faster, more reliable connectivity, high-speed copper solutions such as DAC (Direct Attach Cable), ACC (Active Copper Cable), and AEC (Active Electrical Cable) have become critical components in short- to medium-distance interconnects. High-speed copper. Why do we need ACC and AEC? What is ACC & AEC? There are various connection solutions available for switching networks, such as optical modules + optical fibers, Active Optical Cables (AOC), and Direct Attach Cables (DAC). DAC can be further categorized into active ACC, AEC, and passive DAC. The wrong choice can mean wasted budget, airflow issues, or even performance bottlenecks. What Are 400G DAC, AOC, ACC, and AEC? 400G Direct Attached Cable (DAC) mainly refers to passive direct attach cables, which use conductive copper wires for a direct connection. DAC cables are copper cables with transceivers on either end, often used for short-range, high-speed connections. Passive DACs: Rely on the electrical power from the host equipment, supporting short distances (up to 7 meters). Active. AOC vs DAC vs ACC vs AEC Cables: Which Interconnect Is Right for Your Data Center? Four interconnect technologies.