You need to restart your computer after plugging in one USB device. This way, you might be able to find the culprit device. If you manage to find the device or or identify the USB port causing ...
For more advanced troubleshooting, access the UEFI settings on your Surface Pro 9. Once in UEFI, go to Devices, disable the Docking USB port for at least 15 seconds, and then re-enable it. This can ...