First, I have used to drive a media center in windows (a silent pc next to my TV) and direct my Smart TV (SAMSUNG-UE48H5500). All from my sofa.
In both cases, no problem for the USB stick, allowing the keyboard to communicate with the PC or TV, is recognized. No manipulation on my part to install, and no need for windows 7 drivers.
Transmission occurs without problems, despite wifi traffic supported in my building.
The ergonomics are well thought out: special mention to "left click" button (see video) on the top left, which lets you use the trackpad and click without changing hand position. Said like that, it does not seem revolutionary, but in use it's great.
The numeric keypad is absent, but that's what I was looking for: compactness. (See video)
So for me, the services are excellent: no technical problems and good services in a tight budget.
Other info: 2 years of use, and I've never changed the two AA batteries! (Automatic standby).
Conclusion: 5 stars.