This guide will help you to understand the basic functions of a Power Supply, and to help you to choose your Power Supply Unit (PSU).

Why is a good Power Supply important ?
The PSU is one of the most important components in a PC system, and yet is the one that is given least importance. Good quality components, high efficiency and correct power distribution are the main attributes of a good PSU. A good PSU will increase your system's stability and will protect other components in the PC from suffering any damage. All HEC Compucase Power Supply use high quality components.

What does a Power Supply do ?
It converts the 230V alternative current (AC) into 3,3V - 5,5V and 12V Direct Current (DC, Continuous Current).

What are the main caracteristics of a Power Supply ?

• Power (Wattage)
  Make sure that the Power Supply has enough power for your current system and future upgrades.
• ATX Version. (Form Factor)
  The ATX Form Factor is the most common PSU standard used today.  
  Intel ATX 1.3 version was released in 2003. New versions bring more performance, stability and security for the users.
  Intel ATX 2.01 version  in 2004.
  Intel ATX 2.2 version in 2005.
• Cooling (Fan and Heat Sinks)
  The air flow generated by the fan(s) installed in the PSU is cooling the Power Supply itself and the rest of the case.
• Connectors
  Make sure that there is enough connectors  for all you devices.