All-in-One PC

An All-in-One computer (AIO) is a personal computer that combines the computer and the monitor into a single unit. Many early personal computers, such as the Atari 800 and Commodore 64, were AIOs. The form factor was re-popularized by Apple, Inc.'s iMac, which was first released in 1998.

AIOs share many design considerations with laptops. Because of the limited amount of space in an AIO's case, they often can not accommodate a hotter processor. Apple's iMac, for instance, uses a laptop CPU. Additionally, they tend to offer fewer expandibility options, such as extra internal hard drive bays or expansion slots due to size limitations.