Power Supply Unit for ComputersIf you still wonder why your computer failed to start the other day, the problem may be due to its power supply unit. In reality, the computer power supply unit is the core of the machine and has to supply constantly a specified power rating while the computer is up and running. Certainly, if a constant power supply is needed, do not assume it will always work all of the time. For that reason, it is very important that the power supply unit is dependable and robust.
The main use of your power supply unit is to step down and transform the power from a wall outlet, which delivers alternating current, to direct current. In general, each power supply unit that comes with a computer package is capable of to last long enough until the computer requires an upgrade or even as long as other parts of the computer are still working. However, every so often, it could stop working without a warning and leave you stuck and confused on what happened. In this scenario, you have to change the old power supply unit with a new one.
It is very significant that the computer power supply unit is compatible with or supported by the motherboard of the unit. Computers that come with outdated and old motherboards have old features as well, such as the 20-pin ATX connector for the power supply unit. On the other hand, new computers use 24-pin ATX connectors. It is highly likely that a 24-pin power supply unit is backward compatible with a 20-pin one, but the reverse is impossible.