How To Figure Out What Power Supply You Have?

Power supply units are an essential component of a computer system as they provide electricity to the internal components. However, knowing the specifications of your power supply can be crucial, especially if you want to upgrade your system with new components. The amount of power that a power supply delivers and its compatibility with various components can be essential information to know. Therefore, it is essential to learn how to figure out what power supply you have.

If you’re unsure about the specifications of your power supply, don’t worry, there are a few easy ways to find out. By identifying the make and model of your power supply, you can determine its power capacity, efficiency, and compatibility with new components. Knowing these details is crucial as it can inform which components you can or cannot add to your system and how much power they require. Therefore, it is incredibly beneficial to learn how to identify your power supply details throughout your computer’s lifetime.

How to Figure Out What Power Supply You Have?

To figure out what power supply you have, you can follow these steps:

1. Turn off your computer and unplug the power cord from the wall socket.

2. Open your computer case and look for the power supply unit (PSU). It is usually located at the back of the case, near the fan.

3. Look for a sticker or label on the PSU. This will contain important information about the power supply, including the wattage (or power rating), voltage, and amperage.

4. Use a digital multimeter (DMM) to measure the voltages and amperage of the power supply. This will help you determine if the power supply is working correctly.

5. You can also use software, such as HWiNFO or CPU-Z, to check the voltage and power readings of your computer components.

6. Finally, if you are still unsure about the power supply you have, you can consult the manufacturer’s website or contact their support team for assistance.

In summary, figuring out what power supply you have involves looking for a label or sticker on the physical unit of your computer, checking the voltage and amperage with a multimeter, using software to monitor readings, and seeking the manufacturer’s support if you are still unsure.


1. How do I determine what power supply I have in my computer?
Answer: You can find the power supply model by looking at the label on the power supply or by checking the specifications on the manufacturer’s website.

2. How much wattage does my power supply need to provide for my system?
Answer: The amount of wattage needed will depend on the components in your system. You can use online power supply calculators to determine how much wattage your system requires.

3. Can I replace my power supply with a higher wattage model?
Answer: Yes, you can replace your power supply with a higher wattage model, but make sure it is compatible with your system and its components.

4. What happens if I use an inadequate power supply for my system?
Answer: If you use an inadequate power supply, your system may not operate correctly, or it may fail to start up altogether. Additionally, your system may not be able to handle power-intensive tasks like gaming or video editing.

5. How do I know if my power supply needs to be replaced?
Answer: Signs of a bad power supply include random shut-downs, system freezes, unusual noises, and burning smells. If you notice any of these symptoms, you should replace your power supply as soon as possible to avoid component damage.


In summary, identifying the power supply of your computer is an important task that can help you in several ways. Knowing the wattage, voltage, and amperage ratings of your power supply can help you upgrade or replace it when necessary. You can use several methods to determine your power supply’s specifications, such as checking the label, using power supply software, or checking the manual. Ensure you take all necessary precautions when handling the power supply to avoid injuries or damages. With this knowledge, you can ensure that your computer system is running smoothly and efficiently.

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