I had a chance to try out the 3M MPro150, and I found that the operation was exactly like the MPro 120.

What makes this different is that the MPro150 has a card reader, something that its predecessor did not have. It also had a way to connect to my computer via USB, and I could put files on the MPro150 itself so I could project images or videos directly from device itself.

You should be able to get the 3M MPro150 for about $395 at the 3M site here.