DIY Guide: How to Make a 24 Pin to 8 Pin Adapter for Your PC Build

Building your own PC can be a fulfilling experience, but it often requires creative solutions to get everything working just right. One of the challenges you might face is figuring out how to power your graphics card with an 8-pin connector when your power supply only has a 24-pin motherboard connector. Fear not! With this DIY guide, we’ll show you how to make a 24 Pin to 8 Pin Adapter for your PC build to enjoy smooth graphics performance without breaking the bank or compromising quality. Let’s dive in!

What You’ll Need

Before we start, let’s discuss what you’ll need to make your 24 Pin to 8 Pin Adapter. First and foremost, you’ll need a power supply with a 24-pin motherboard connector and an 8-pin graphics card connector. You will also need essential tools like wire cutters, strippers, pliers, or crimpers.

Next up are the wires themselves. You can purchase pre-made cables or harvest them from an old power supply unit (PSU). If you’re opting for the latter option, choose wires with similar thicknesses, as they will carry different amounts of current once connected.

You’ll also need connectors for both ends of the wires: ATX contacts for the 24-pin end and PCIe contacts for the 8-pin end. Electrical tape or heat shrink tubing is essential to insulate and protect your finished adapter from accidental shorts.

With these supplies, you’re ready to start building your adapter!

Step One: Cut the Wires

The first step is to cut the wires before creating our 24 Pin to 8 Pin Adapter. This may sound simple, but it’s essential to take extra care when cutting the wires of your power supply.

To begin with, make sure that you have all the necessary tools ready before you start cutting. You will need a set of wire cutters and strippers to get started on this process.

Once your tools are ready, carefully inspect your PSU cables and identify which wires must be removed. Typically, for a 24-pin ATX connector, there are four +12V (yellow), two +5V (red), one -12V (blue), one +3.3V (orange), nine ground (black) wires and two sensing/control pins.

Next, use your wire cutters to snip off any excess or unnecessary wiring from each pinout according to their colour code until you’re left with only eight pins: four yellow (+12v), two black (ground), one blue (-12v) and one red (+5v).

Remember that precise cuts will help ensure everything fits together perfectly later in these steps!

Step Two: Strip the Wires

Step Two: Strip the Wires

Now that you have cut all the wires, it’s time to strip them. Stripping the wires is essential in making a 24-pin to 8-pin adapter.

To strip the wire, take your wire stripper and place it around one end of each wire. Do not strip too much insulation off, as this could damage or shorten your PC components.

Once you have stripped the wires, twist each exposed strand tightly with your fingers. This will ensure a strong connection when soldering later on.

It’s important to note that if you’re new to stripping wires or soldering generally, it may take some practice before you get it right. Don’t be discouraged if things don’t go smoothly initially – keep practising until you feel confident in your ability.

When done correctly, stripping the wires should leave you with clean and neatly twisted strands ready for connecting in Step Three.

Step Three: Connect the Wires

Step Three: Connect the Wires

Now that you have stripped the wire ends, it’s time to connect them. First, look at your 8-pin connector and determine which wires must be connected.

Next, twist one end of each wire pair tightly using pliers or fingers. Make sure that there is no exposed wire sticking out from the twists.

Once all pairs are twisted together, use electrical tape to wrap around each connection point securely. This will ensure that no electricity leaks out of the wires when they are in use.

After taping up all connection points, test your adapter to ensure it works properly before installing it in your PC build.

Remember, taking precautions such as wearing gloves or safety glasses can help prevent injury while working with electrical components. Safety should always come first!

Step Four: Tape Up the Connection

Step Four: Tape Up the Connection

Now that you’ve ensured your wires are correctly connected and secured, it’s time to tape up the connection. This step is crucial as it will ensure that your adapter won’t short out or cause any damage to your PC.

First, grab some electrical tape. You can find this at most hardware stores or online retailers. Ensure you have enough to cover the entire length of the exposed wire.

Next, carefully wrap the electrical tape around each wire, making sure there are no gaps or overlaps in the tape. Be sure to cover all exposed metal parts of each wire.

Once you’ve wrapped each wire with tape, wrap a layer of electrical tape around them. This will help keep everything secure and prevent any movement or fraying.

Inspect your work before plugging in your new 24 Pin to 8 Pin adapter into your PC build. If everything looks good and feels solidly connected, then congratulations! You have successfully made a DIY 24 Pin to 8 Pin Adapter for Your PC Build!


Creating a 24-pin to 8-pin adapter for your PC build may seem daunting initially, but it can be done easily with the right tools and patience. Always prioritize safety when working with electronics and double-check your connections before powering your system.

Making your own adapter saves you money and gives you the satisfaction of knowing you built something yourself. Plus, it allows for more customization options in terms of cable management.

With this DIY guide on how to make a 24-pin to 8-pin adapter, you can confidently tackle this project and take another step towards building the PC of your dreams. Happy building!

Leave a Comment