In theory at least, Impress will open and display Powerpoint files. That said, Libreoffice often plays silly b’s with formatting etc. when fed M$ files. It only seems to like the carp odf files.
Well it’s all in. The HDMI extenders add some thin yellow vertical bars at 1080P but they’re just fine at 720P which is indistinguishable from 1080P as far as the presentations go.
Customer is happy and that’s what counts. Now I wait for the money…