Windows – Disable trackpad when mouse is connected (Dell laptop)

When typing on the keyboard of my Dell laptop, my palm occasionally slips over the trackpad, moving the cursor to another position in the text or putting focus on another window.

I’d like to find a way to automatically disable the trackpad when a mouse plugged in.

I tried that :Disable trackpad when mouse is plugged in – Windows 7 Macbook Pro but it doesn’t work with my computer.

Solution:

If you can see the Dell TouchPad icon in the System Tray, click on it.

In the Dell TouchPad application/control panel, select “Device Select”. At the bottom of the window will be a checkbox to disable the touch pad & control stick when an external mouse is present.