You now have to back up your USB drive before you try to recover anything. You can do this in Disk Drill. Go to Extra Tools, ...
Universal USB Installer is a Live Linux USB Creator that allows you to choose from a selection of Linux Distributions to put on your USB Flash Drive. The Universal USB Installer is easy to use. The ...
If only one USB device is not working, try plugging in another USB device to see if it is recognized. If other devices work, the issue may be with the original USB device rather than the port itself.