If you look at 7780 spec accessories Dell has mentioned the following  Stylus ($16.99 free shipping from Dell) Targus Stylus for Capacitive Touch Devices [URL]
No Pen for a $2,500 machine with touchscreen feature? That seems like a pure oversight in planning to me. Can anyone at Dell find/engineer a Dell pen to work with this machine?
No pen support for Optiplex 7780 is disturbing