for /f "usebackq" %%B in (`wmic path Win32_SerialPort Where "Caption LIKE '%%Arduino%%'" Get DeviceID ^| FIND "COM"`) do set comport=%%B
echo Com Port for Arudino device is detected as %comport%.

$port = ( Get-WmiObject Win32_SerialPort | Where { $_.Description -like '*Arduino*' } | select -first 1 )

@echo off

:: -------------------------------------------------------
::                  MAIN PROGRAM START
:: -------------------------------------------------------

    echo  Hello, I am a batch file. I need administrative permissions
    echo  in order to run correctly. I am going to check for those
    echo  permissions now.

    pause

    call :check_Permissions


    echo  If we have reached this point, it means permissions were
    echo  good. I am able to continue this batch file.
    

::           REST OF MAIN PROGRAM GOES HERE    

::           ...
::           ...


:: -------------------------------------------------------
::                  MAIN PROGRAM END
:: -------------------------------------------------------

    goto :VeryEnd


:: -------------------------------------------------------
::                    SUBROUTINES
:: -------------------------------------------------------

:check_Permissions
    net session >nul 2>&1
    if %errorLevel% NEQ 0 (
         Echo        ================================================
         Echo        =   ERROR    ERROR    ERROR    ERROR    ERROR  =
         Echo        ================================================
         Echo      Program is not running with administrative permissions.
         Echo:
         pause
         exit
    )
goto :eof


:VeryEnd

([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole(
        [Security.Principal.WindowsBuiltInRole] "Administrator")