A PC power supply unit or PSU as it is called is the unit that supplies power to the other components of a computer. This unit converts AC power from the mains to DC current to power the internal components of the computer. If you are looking to replace or upgrade your existing power supply unit it is best to know what to look for when you are shopping around.

Here are some pointers as to what to look for when shopping for PC power supplies.

• Make sure that the supplier has models available in a range of form factors such as Micro/SFX, NLX,Flex, ATX, ATX12V,1U and 2U.

• The PC power supplies should be designed to be compatible with SSI, Intel P4 or AMD Athlon technologies.

• The PC power supplies should have protection against short circuits, power overloads, overvoltage or over temperature.

• The PC power supplies should have features which allows them to save energy and have high efficiency.

• It is best to have a PC power supply unit which has fanless operation and low noise operation.

• It is best if the power supply unit has cables that are sleeved since this makes wiring easier as well as being practical.

• PC power supplies should be constructed with quality materials and have industrial grade electrical components that would increase the products life span.

• Check for a high mean time between failures (MTBF) rating. A high MTBF rating with mean the power supply unit with have a longer device life as well as be more reliable.

• Make sure that the PC power supply unit you choose is compatible with your existing PC.

These are just a few features to look for when shopping for PC power supplies. If this is not an area where you feel competent to make the right choice, it is best to ask an expert for advice. Make sure that the supplier from whom you purchase the PC power supplies is able to provide you with professional and expert information and advice. They should be able to help you chose the best quality product and a product that suits your budget. The supplier should also be able to help you find the PC power supply unit with is compatible with your PC.