Guide to Connecting Computer Power Supply to Motherboard

Step 9: Connect ATX 24/20-Pin Computer
Power Supply Cable to Motherboard

Align the clip of the ATX 24/20-pin connector with the notch in the plug and safely and firmly clip it in place. New motherboards now use the 24-pin connector instead of the 20-pin.

The newer CPUs use an extra 4 or 8-pin 12-volt connector on the motherboard. Ensure that the relevant cable is attached to this connector on the mainboard.

The power supply unit (PSU) converts AC voltage to low voltage regulated DC voltage for the internal components of your PC and they are generally switched-mode power supplies.

Ensure when purchasing a PSU that it provides at least 80% efficiency.

Exercise extreme caution when working inside a power supply unit since electrical shocks can be caused by touching the electrically charged internal capacitors.

Click here to read "What is a Computer Motherboard?".

Note: An incorrectly installed connector will 'burn' your computer.
(See Diagram Below)

Computer Power Supply 24-Pin Power Connector

Installation of an ATX 24-Pin Connector

Click Here go to to Step 10: Install Computer Video Card

Back / Next

Click here to read: "Computer Power Supply and how it works!".

Click here for cheap computer PSUs at great prices.

Browse here for all the steps in the
Build Your Own Cheap Computer

Return from Computer Power Supply to
Cheap Computer Home Page

Share this page:
Enjoy this page? Please pay it forward. Here's how...

Would you prefer to share this page with others by linking to it?

  1. Click on the HTML link code below.
  2. Copy and paste it, adding a note of your own, into your blog, a Web page, forums, a blog comment, your Facebook account, or anywhere that someone would find this page valuable.

Our Disclosure and Advertising Policy. Click here to read...

* As an Amazon Affiliate I earn from qualifying purchases.
* Amazon and the Amazon logo are trademarks of, Inc. or its affiliates.

Why not work where your heart is?

Site Build It!