Plug in USB to disable touchpad

1. Download the Synaptics touchpad driver from the Internet and install it → restart.

   

    

2. Enter "regedit" in "Run" and press Enter to enter the registry → expand HKEY_CURRENT_USER/Software/Synaptics/SynTPEnh in turn.

   

    

3.  Right-click → New DWORD (32-bit-value) disableintpdfeature Modify the value to 3 Right-click → New DWORD (32-bit-value) showdisableicon Modify the value to 1.

   

    

4.  Restart the computer after the modification is completed.

   

    

5. Open "Control Panel→Hardware and Sound→Mouse→Device Settings→Connect External USB Pointing Device is Disable Internal Pointing Device" check box.

   

    
1. Then restart is OK.
   

    

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      registry code

   Windows Registry Editor Version 5.00
   
   [HKEY_CURRENT_USER\Software\Synaptics\SynTPEnh]
   "disableintpdfeature"=dword:00000003
   "showdisableicon"=dword:00000001
   
   [HKEY_CURRENT_USER\Software\Synaptics\SynTPEnh\ZoneConfig]
   "IsUsingZoneFlags"=dword:00000001
   
   [HKEY_CURRENT_USER\Software\Synaptics\SynTPEnh\ZoneConfig\TouchPadPS2TM3105]
   
   [HKEY_CURRENT_USER\Software\Synaptics\SynTPEnh\ZoneConfig\TouchPadSMB2cTM3105]