System unit

Updated: 10/17/2017 by Computer Hope

Alternatively referred to as a box or the main unit, a system unit is the case that contains all of the main parts of a computer. Below is a picture of a computer with each of the main components that help make up a computer. In the picture, you can see the system unit, Flat-panel display, Speakers, Keyboard, and Mouse. We've also labeled each of the input devices and output devices.

Desktop computer

Is there a difference between a computer, desktop, and system unit?

No. As long as you are referring to the case that holds all the main parts of the computer (e.g. CPU, motherboard, hard drive, and RAM) all of these terms are synonymous.

Chassis, Desktop, Enclosure, Hardware terms