A power user or experienced user is a computer user who uses advanced features of computer hardware, operating systems, programs, or web sites which are not used by the average user.
A power user is a computer user. Experienced user is a computer user. This computer user uses advanced features of computer hardware. This computer user uses advanced features of operating systems. This computer user uses advanced features of programs. This computer user uses advanced features of web sites. These web sites are not used by the average user.