USB Device Not recognized or Malfunctioned? Do you need to format the disk before using it? If yes, it indicates that your USB drive is corrupted or controlled by a corrupted drive software.

Resolve the “USB Accessories Disabled” error on your Mac with these 11 effective fixes. Improve connectivity, manage power ...

It usually happens when the computer is not able to recognize the device ... scroll down to Bluetooth & devices. Switch to the right, and go to the USB heading. It allows you to configure ...