I use the PTV3000 with my Surface Pro 3 all the time, just updated the firmware to the latest version.I have the TV firmware up to date.
Thinking of getting PTV3000 but $60 down the drain if it does not work.
So if I go the cable way then I will need min display port to HDMI adapter > then long HDMI cable to get from table to HDMI input of the LG LM620s TV. Correct?