MacUser Dell Beamer M115HD

I have a Dell Mobile Projector M115HD since half a year. I am very happy with his advantages: Luminous, light, small sized etc. With cables from ma computers it functions with no problems. Even movies from the micro SD card.

I'd like to  make use of his other advantages. But I'm a convinced Mac-user since 1991! It's nearly impossible to receive assistance from Dell-Support who is exclusively Windows oriented!

I'd like to use WLAN with wireless dongle and remote control. Before purchasing them i should know wether it will function with Mac OS X 10.10.2.

I use the projector mainly for Powerpoint-(Office) or Keynote-(Mac)-presentations. In the manual I read that a pptx -presentation is to convert in PtG2-Windows format before using it on M115HD. So my only possibility is to convert my presentation into a movie-fomat?

Many thanks for your help.