Power Supply
A power supply is an electronic device that supplies electric energy to an electrical load. The main function of a power supply is to convert one lot of electrical energy to another and, as a result, power supplies can sometimes be called electric power converters.
When people think of ways to improve their computers performance many people forget about power supply.The power supply unit is a vital piece of equipment used to speed up your computer
a power supply can be connected by being plugged into this cable shown above