The first question to ask yourself is, "Is what form factor is my power supply?". The most common types are ATX and Micro ATX.<ref>If you have this information available then the selection process is much easier. The information is sometimes stamped somewhere on the power supply or may be contained in the manual for your existing computer. If you're looking for an ATX power supply make sure the power supply is an ATX form factor, not micro ATX or any other.</ref> The majority of desktop computers sold use the ATX form factor since its introduction by Intel in 1995. | The first question to ask yourself is, "Is what form factor is my power supply?". The most common types are ATX and Micro ATX.<ref>If you have this information available then the selection process is much easier. The information is sometimes stamped somewhere on the power supply or may be contained in the manual for your existing computer. If you're looking for an ATX power supply make sure the power supply is an ATX form factor, not micro ATX or any other.</ref> The majority of desktop computers sold use the ATX form factor since its introduction by Intel in 1995. |