I've been using it for a few weeks, I know very good performance, I bought this kybd because the previous one didn't work well and so far there aren't any complaints about it. At the top there are dedicated function keys for sound control (mute, volume up, volume down), start email, turn laptop off/on. I love those special function keys, especially as I hate it when the keyboard has three different functions on the same key. Very solid construction and very good material. You can turn kybd on and off, which is helpful if you won't be using it for a day or two. The only thing I had to buy was a palm rest to place my hands properly when typing, without the palm rest it feels high and not very comfortable for me.
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