I just came across this unit, along with the mics, and a PowerCam Presenter.
The first time I went to boot up the HDX, I did get the Polycom splash screen, but I accidentally caused a loss of power.
Every subsequent attempt to boot has seemingly failed, or at least not output component or DVI video. I have tried both the partial and full restore via the front reset button to no avail. I have also attempted to cycle through the displays with the remote.
With that said, the unit does react to [led flash] remote presses, and when connected via LAN, it does indicate communication at the rear port.
Any ideas? I really like the concept in principle, and would really like to give it a couple months of legacy usage before making a major commitment.
Thanks in advance, and happy to answer any followups.