::::::::::::::::::::::::::::::: TAKE ListUsbDrives
Set ListUsbDrives=&REM
for /f "tokens=* delims=" %%i in ('ListUsbDrives ^| find "MountPoint"') do (
Set Drive=%%i&REM
Set ListUsbDrives=!ListUsbDrives! !Drive:~20,1!&REM
)
Set ListUsbDrives=!ListUsbDrives:~1!&REM
Echo List Usb Drives: !ListUsbDrives: =:, !:

::::::::::::::::::::::::::::::: User's choice
:reEnter
Set letter=&REM
Set /p letter="Enter your disk letter or empty to EXIT (!ListUsbDrives!): "
IF :!letter!:==:: Exit /b
Set letter=!letter:~0,1!&REM
for %%i in ( qQ wW eE rR tT yY uU iI oO pP aA sS dD fF gG hH jJ kK lL zZ xX cC vV bB nN mM) do (
set #1=%%i& set #2=!#1:~0,1!&rem
if :!#2!:==:!letter!: set letter=!#1:~1,1!&rem
)

For %%i in ( !ListUsbDrives! ) do If %%i==!letter! goto:Continue
Echo.Disk !letter!: is not valid USB device.
goto:reEnter

::::::::::::::::::::::::::::::: Continue
:Continue
Set letter=!letter!:&REM
Echo.
Echo Your choice is "!letter!" (read full INFO)

::::::::::::::::::::::::::::::: Full INFO
Echo.-----------
Set #z#=**&REM
for /f "tokens=1,2 delims==" %%a in ('ListUsbDrives' ) do (
Set #1=%%a&REM
Set #1=!#1: =!&REM
Set #bb=%%b&REM
if "!#1!"=="MountPoint" Set #z#=!#bb:~1,2!&REM
if :!#z#!:==:!letter!: Echo.# %%a:!#bb:~0,50!
)
Echo.-----------

endlocal
exit /b