It occupies a smaller footprint than a desktop computer with a tower form factor, and also uses fewer cables.
[4][5] Some disadvantages include generally being more expensive than desktop computers, a lack of customizability—most of the internal hardware such as the RAM and the SSD, especially in post-late-2010s machines, is soldered onto the system board—a lack of upgrade paths for the CPU, RAM, and technology of the display, and the difficulty of repair.
[10] This form factor was popular during the early 1980s for personal computers intended for professional use such as the Commodore PET,[11] the Osborne 1,[12] the TRS-80 Model II,[13] and the Datapoint 2200.
Since the early 2000s, some all-in-one desktops, such as the iMac G4, have used laptop components in order to reduce the size of the system case.
[16] There have been exceptions to this; the monitor portion of HP's Z1 workstation can be angled flat, and opened like a vehicle hood for access to internal hardware.