Hereis how: Press the Win + S keys together to open the Windows Search utility. Type Device Manager in the search area and click Open. Inside the Device Manager window, expand the Universal Serial Bus controllers section. Right-click on the targeted USB controller driver and choose Properties from the context menu. CheckPort on Linux and macOS. To check the device name for the serial port of your ESP32 board (or external converter dongle), run this command two times, first with the board/dongle unplugged, then with plugged in. The port which appears the second time is the one you need: Linux. ls /dev/tty*. Method1: Try another USB port. If you are with a desktop, try to connect your USB device to your computer via the USB ports at the back of your computer case. The USB ports at the back usually have stronger electricity power coming through, which will allow a more stable power supply to your USB device. Thefirst step to fix the power surge on the USB port is to check the connection. Possibly, the error appeared as the USB drive wasn't connected properly. So, check the connection. Even try connecting the drive to a different port. If the error still accompanies you, check the next solution. Areyou getting an error message that the USB ports are not working on Windows 10? In this video, I will show you how to get the ports working again. Enjoy t Hopefullyyour existing system driver will be compatible with the PCIe card controller chip. Then connect your mouse and keyboard, and fix the initial problem. Then you can remove the card. It should be obvious that any USB -> PS/2 adapter won't work because the USB root is disabled. 16 Reconnect using only AC power adapter without the battery and power up. 17. See if USB connectivity is restored. 18. Power down and retry step 14 with the battery connected as well as the AC adapter. If the USB ports gain functionality through either step 14 and/or 15 then the issue can be attributed to an internal short or a power surge. 19. Onthe PC side, try disconnecting all power using USB devices, such as external drives. If you are using an external USB hub, don't. On the phone side, charge the phone to at least 80% before connecting it; the phone uses much less power for charging above 80%. Reply. 2Wj83WG.