A power user may refer to any of the following:
For example, an end user, new computer user, regular user, or an average user may only use a computer to browse the Internet, read e-mail, and not customize their computer or its settings. A computer power user may have built their computer, is creating something (e.g., software program, video, or website), uses keyboard shortcuts, adds new hardware, adjusts system settings, etc.
A power user may not be as skilled as a computer programmer or network administrator but is competent enough or has enough desire to do more than the basic tasks on a computer. It is also possible for a person to be a power user of a specific area. For example, someone may not be a computer power user but may be a power user of a specific program such as Adobe Photoshop that they use frequently.
2. On a computer network, a power user is a user who has almost as many rights as an administrator or root, but not complete control. This user can be used to administrate and maintain a computer network.