Are you worried that your USB port is working poorly or no longer meets specifications? This article will show you how to check the power supply to the USB port using Windows built-in tools, third-party applications or a voltmeter.
Use Device Manager in Windows
You can check the USB port's power supply using Device Manager in Windows. To find data in Device Manager, follow these steps:
Enter Device Manager into the search box on the Windows taskbar. If you don't see the search box in the bottom taskbar, right-click in the empty space. Then, point the mouse cursor Search and click the box Show search box let it be selected. Press Enter when search results highlight Device Manager. You can also right-click the button Windows and click Device Manager.
In Device Manager, click Universal Serial Bus controllers to expand it.
Right click on one of the named items USB Root Hub or Generic USB Hub and choose Properties.
Click Details in a new window. Then in Propertyselect Power data.
This will show you the source classification that Microsoft has implemented since Windows 8. Going from D0 arrive D3the higher the number, the lower the USB port's power will be. Therefore, if seen D0 meaning your USB port has maximum output power.
Accordingly, check the power output of every USB port on your PC. The number of USB ports will depend on your motherboard and form factor – ATX, mATX or mini-ITX – with the smallest motherboards having the lowest number of USB ports. The lowest output power is D3, which occurs when your computer goes to sleep.
If you have enabled a device to wake, it will have to go to power state D1 or D2, but only if you see this supported in Power capabilities.
Use third party software
There are third-party software programs you can use to get information about the USB port. USBDeview is free software that provides users with power parameters of the USB port on the computer. This is portable software so you do not need to install it on your computer.
To use USBDeview:
Step 1. Download USBDeview software to your computer.
Step 2. Extract and run the application file.
Step 3. Identify the USB port. An easy way to find a USB port is to click on the label Description to sort devices according to description. This will group all USB ports and make them easy to find in the list.
Step 4. Click on the USB port you want to test.
Step 5. Scroll down until you find the column that says Power. Click on it to see how much power that port uses.
Use hardware
Another way to find out the power source of a USB port is to use a physical USB voltmeter. These devices detect the gate's input current, power, energy, and voltage. Unlike the above two methods, which only work with desktops and laptops, you can use a voltmeter to detect the power of other devices such as phones, power banks, and car chargers. .
There are many voltmeter options available at low prices and they come with a wide range of features. Usage is very simple, only one connection is needed to display power information for the port.
You can check your USB ports in one of the three ways above if you suspect a problem.
Wishing you success!
