The direct attach copper or DAC cable is is a dual-coaxial copper cable that directly connects a port (or line card) in an active device (such as a switch, router, server, or data storage device) in a data network. It is a low-cost short-range connection solution that replaces optical consceivers. It consists of cables and transceivers at both ends of the cable. The price is much cheaper than similar types of optical consceivers. It is used for short-distance connection between network equipment.
To further understand their advantages, let's discuss in detail about what is a direct attach copper (DAC) cable and how to use them.
