Dell Latitude E7440 :: Disable Click On The Pointing Stick

Received a new Latitude E7440 today, and I like having the option of a pointing stick and a trackpad depending on what I'm doing, however the pointing stick apparently also can be "clicked" instead of using the dedicated buttons... this is annoying to say the least.

When I'm moving the mouse pointer with the pointing stick, if I press a little too hard it thinks I'm trying to do a click/drag.

I can operate the dedicated buttons just fine, so is there some way to disable this pressure-sensitive click feature on the pointing stick? Otherwise I'll have to disable the stick entirely as it's more annoying that having somebody randomly clicking the mouse buttons while you're trying to work...