Summary: I hope that Logitech gets moving and creates an update for Win 8.1 because many of the keyboards functions do not work under this operating system. Nice board but not worth paying the extra money until the functions work with Win 8.1.
Summary: Nice keyboard design and good quality but Space bar is too hard.I purchased 2 of them and I thought the problem was mine and I switched with the other one and same problem. I used for a while then I had to go back to my old keyboard. I wish Logitech have a recall for this keyboard to fix this problem because I really like the design.
Summary: For the first 370 days the keyboard was flawless. Loved the thing. Connectivity via wireless is still excellent. Ergonomics, for me, perfect. I used the wired MSFT Natural Kbd for years. Loved that one. But that took a lot of getting used to. This kbd is more comfortable without any period of adjustment. Battery life is great. I never turn it off. The batteries went close to a year. Fine for me. Now for the 371st day. I bought a refurbished version of the keyboard.
Summary: I have enjoyed my K350 until I upgraded to Windows 8.1. I lost the zoom in and out buttons, the window selection button, the setup key, the camera key and the ability to program any of the function keys. Set point is not compatible with and will not function on windows 8.1.
Summary: I use it for few years now. Poor designed keys, they stick if you don`t push them just under certain angle. So it breakes typing flow. Bad product quality for the price, lack of Linux support and overall openness in technology. (AES on key encryption) Equall to lack of trust.