Power Supply Unit (PSU) serves to convert electrical voltage (AC 220/230/240 V, 110/120 V) for use by computers (DC 3.3 V, 5 V, 12 V). The amount of electricity that can be handled is determined by its power supply and is calculated in units Watt.
Power Supply is a device that is in the CPU that serves to channel electrical current to various computer equipment.
This device has 5 or more connectors, which can be connected to control every aspect of equipment such as:
• Motherboard
• Harddisk
• Floppy Disk Drive
• CD - ROM
Power supply low quality to produce DC voltage that is not flat and there are ripples (ripple). If used in a long enough period of time will cause damage to computer components, such as hard drive.
An important component in the power supply is cooling (cooling). Equipped with a minimum of a fan.
20 pin ATX connector
20 pin ATX connector that enter into an ATX motherboard. If your motherboard has slots for 20 pin connector needed for the motherboard.
24 pin ATX connector
Some motherboards require a 24 pin ATX Connector. Power of 430W and 500W power supply, both with 20 and 24 pin connector.
Molex Connector
This is an IDE connector that supplies power to the hard drive and cdroms.
Floppy connector
The 4 pin floppy connector supplies power to the floppy drive on your computer.
Aux Connector
Look on the motherboard and see if there are slots that accept 6 pin Aux connector. If there is a slot for it then chances are you will need it.
SATA Connector
Hard drives and other devices with sata connectors. If you have a computer with sata connection then you are in need of power supply with sata connectors.