Connector looks like..... Name(s) Function

24 Pin
20+4 Pin

 Main power connector for the motherboard. 

Notes:
On a 20+4 Pin connector, four of the pins are on a separate block making it reverse compatible with the older motherboards that require only a 20 pin connector.


4 Pin ATX12V   Connects to the motherboard ATX 12V socket. Provides additional power to the CPU.


EPS 12V
8PIN ATX 12V

Connects to the motherboard EPS 12V socket. Provides additional power to the CPU.



4+4 Pin ATX/EPS     A hybrid of the 4 PIN ATX12V and EPS 12V connectors that can be split in half or combined to accommodate either the EPS 12V Socket or the ATX 12V socket. Provides additional power to the CPU.


PCIE 
6 PIN PCIE		 Connects to a six pin socket on a video card to provide additional 12v power.


6+2 PIN PCIE

Can be used to connect to a six or eight pin socket on a video card to provide additional 12v power.


SATA Most commonly used to power hard drives and optical drives.


Molex Cable

Peripheral Connector		 These are mostly often used for fan connections in modern system, but in the past they were used for hard drives, optical drives, and many other devices.

Floppy Connector Used to power a floppy drive.

Fan RPM Monitor Hooks up to fan header on motherboard to regulate the speed of the power supply fan.


Notes:
Our newer power supplies regulate their fan speed internally and do not include this connector; its absence should not have any effect on your system.