I just came from Bestbuy, they had 5 in stock but they were in the back, I asked the guy if he could get a manual or check if it said that it had RS232 control on the box. He went in the back and then came out and said there was nothing on the box and he didn't want to get the manual because then it would be an open box model and he would have to sell it at that, I told him I wasn't going to buy it without looking at the manual first. Sorry I tried. BTW it went up by $200 yesterday, sorry (again)
Many are PnP so plug it in, let LMCE detect it. It will take you to the setup Wizard where you can tell it what you have connected to which inputs and then it will change the inputs, volume and turn it on/off when/if it needs.