Casio releases a patch software "serial_p.zip". Please install it when you use the serial RS232C port.

clibrary.pdf is manual and slib_100.zip includes .Lib and .h. You can control backlight or reset from software.

Casio does not have any plan to release Upgrade kit from PA-2400U to PA-2400W. Because the hardware of PA-2400W is slightly different from that of PA-2400U.

HKEY_LOCAL_MACHINE\Software\Microsoft\Shell\Keys\408A

There is voiceapp.exe. If you delete it, the voice button makes an error "A filename must be specified". If you write your application name, your application starts working.

HKEY_LOCAL_MACHINE\Software\Apps\SIPManager

These is a key SIPExeName and string "sipanel.exe". You can change this string.

<In case you use external battery or external battery>

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Power

ExtPowerOff = 0 -- 0 means no suspend.

Delay Time to power off when you press power button

HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\DOWN_STABLE "OFFCount"=dword

When we see it after PA-2400W starts up at first time or full reset, the key of DOWN_STABLE is not created. Please make the key. Also you create OFFCount as DWORD, and preset the value 70 or 80 for 2 seconds delay.