Uninstallation: As DLL files are created to support other programs and softwares working well, the data and functions are actually shared by many programs. when you uninstall a program, AngelUsb.sys may be mistakenly deleted.

Make this lower case.
uninstallation: as dll files are created to support other programs and softwares working well, the data and functions are actually shared by many programs. when you uninstall a program, angelusb.sys may be mistakenly deleted.