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@Hydra
How is the track ball.
Well, it took a bit of effort to get used to it. I've got it plugged-in to my office PC and I've been playing with it for some time. Now that I've got the hang of it, I think it will do for basic HTPC-only functions. It will not be comfortable to use for anything more.
The keyboard is quite fine -- it is very similar in size to my old E90's keyboard so I've taken to it quite nicely. It isn't perfect, but for my requirements, it will suffice.
IMO the biggest drawback of this device is that it is too light. I like my gadgets a bit on the heavier side and this is way too light for me. It is also not backlit, but that is not a big issue for my needs.
As far as the range issue goes, I don't think it will be a problem for me -- I will be sitting only about 8-9 feet from the PC. Right now, with my office PC, it works at a distance of about 11 feet.
From what I've read about this device, it will help if you can plug it into the USB socket on the front of the PC. If it is plugged into a USB socket on the back of the PC, range does reportedly suffer.
In my usage-scenario, if at all there is a range issue, I will solve it with a 3-meter USB extender cable that I can snake along the wall, under the curtains (beside the rack), closer to my seating position.
The Logitech DiNovo Mini would be the best KB/Trackpad combo in this form factor but it is way too expensive.