Hi, It seems that Google doesn't have an answer to the question - how to connect the dongle inside the body of the projector? There's an HDMI port there where the dongle seems to fit but there's no mini-USB power source there. Some pictures show this:
FAQ & Answers
It has to be powered through a micro-USB connection which is missing in my projector.
Next, I found there's was an enclosure under the top cover where my dongle should fit, and the user's manual says that a mini USB is an option, so my problem is that I couldn't make sense of the mini USB option on to how I can get it.