User:Juventas/Power supply unit (computer)
From Wikipedia, the free encyclopedia
A computer power supply unit (PSU) is a device that converts electrical power for a personal computer. Typically it is a switched-mode power supply converting mains electricity for one or more loads requiring direct current (DC) voltage.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e9/ATX-Netzteil.jpg/640px-ATX-Netzteil.jpg)
- This article is about standardized computer power supplies. There are many designs that are unique or proprietary.
Desktops, workstations, and servers commonly have internal power supplies that require active cooling and follow a standardized form factor. Laptops and netbooks more commonly have an external power supply that complements a rechargeable battery. Thin clients and nettops can have an internal small form factor power supply or an external power supply.