USB: Measure power - this is how much power the port has

If you want to know how much power the USB ports on your computer provide, you can find this out in several ways. Since not every USB port brings the same amount of power, it is worth measuring it. There are several ways you can do this, such as using software or a meter.

How to measure the power of your USB ports

If you want to power devices through your USB port, it is important to know how much power the ports have. To find this out, you don't need a measuring device directly, also free tools like "USBDeview" from Nirsoft can give you the necessary information.

1. Download the free tool USBDeview.
2. Then follow the installation wizard to complete the process and start the program.
3. After that, you will be shown a list of all devices. In addition, you will see specific information about the devices.
4. Select a USB port here with a double click. A more detailed overview opens.
5. In the properties dialog you will see the entry "Power". This indicates the current in milliamperes, which is passed to the connected device at the moment.
6. Alternatively, you can use a suitable measuring device. This is especially useful if you want a precise value and not an approximate.
7. For this you need a USB multimeter. You connect the meter to the USB port. The device, on the other hand, you connect to the multimeter.
8. After that, depending on the meter, you will see the voltage, power and resistance on the display of the meter.