How To Find Out What Power Supply You Have Without Opening Computer?

In today’s digital era, computer usage has become an integral part of our daily lives. As such, it’s crucial to be aware of the components that make up a computer to ensure that it’s functioning efficiently. The power supply is an essential part of a computer that provides uninterrupted power to the system. Therefore, it’s crucial to know how to check the power supply of your computer without opening it up.

Identifying the power supply of your computer can be a daunting task, requiring technical knowledge of the machine’s hardware. However, there are several methods for discovering the power supply’s specifications without having to open the computer’s cover. With the right knowledge, users can ensure that their computer is performing optimally and avoid any unforeseen hardware issues. So, let’s dive into the different ways that will allow you to find out the power supply of your computer without disassembling the system.

How to Determine Your Computer’s Power Supply Without Opening It?

If you are curious or need to know what power supply your computer is using, you can find out without opening the computer case. Here are a few ways to find out:

1. Check the power supply unit (PSU) label: Most power supplies will have a label with the manufacturer’s name, model number, and DC output information on the exterior.

2. Use System Information: Windows operating systems have a built-in utility called System Information that can provide details about the hardware installed in your computer, including the power supply.

3. Check the BIOS: The Basic Input/Output System (BIOS) is software that runs when the computer is turned on. It contains information about the hardware installed in the computer, including the power supply.

4. Use a software tool: There are third-party software tools available that can provide information about the system hardware, including the power supply. PC Wizard and HWiNFO are a few examples.

It is essential to know the power supply capacity of your computer so that you can upgrade or replace it when necessary. Keeping this information handy can also be useful when troubleshooting issues related to power supply.


1. How can I find out my computer’s power supply without opening it?
You can check your computer’s power supply by searching for its model number or specifications in your computer’s documentation or manufacturer’s website.

2. Is there a software that can detect my computer’s power supply information?
Yes, you can use software programs such as CPU-Z, HWiNFO, or Speccy to detect your computer’s power supply information.

3. Can I use the Command Prompt to find out my power supply information?
Yes, you can use the Command Prompt and type in the command “wmic power supply get name, manufacturer, or voltage” to check your power supply information.

4. Is there a way to find out my power supply information on a Mac computer?
Yes, you can check your Mac’s power supply information by clicking the Apple menu, selecting “About This Mac” then selecting “System Report” and looking for the “Power” section.

5. What is the benefit of knowing your power supply information without opening your computer?
Knowing your power supply information without opening the computer can help in upgrading or replacing hardware components, optimize system performance, and troubleshoot power-related issues.


In conclusion, we can say that finding out your power supply unit’s details without opening up your computer can be done in a couple of ways. Through the computer’s manufacturer’s site, or the command prompt, you can gather the necessary data to figure out the wattage and other relevant information, like the brand. With the right knowledge, you can troubleshoot any power problems you may have, or plan ahead for any upgrades or adjustments you may need. It saves you from disassembling your computer and reduces the time and effort needed to solve any related issues. Take advantage of these methods, and keep your computer running at optimal levels.

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