Needs hotkey switching.
592803
Works well but would give it five stars if it had hotkey switching instead of or in addition to the physical switch button.
1971066
Works a lot better than the RF keyboard I had before. One thing that's annoying is that you HAVE to hit the Fn key every time before using any of the F keys.  For example, want to rename?  Must hit Fn+F2. Want to close the window?  Must hit Fn+F4.  I wish there were a way around that but I can't find one.  Microsoft typically tries to force you to use the F keys for something other than their original intention on all their keyboards and it drives me NUTS!
3664888
It is difficult to navigate with the click-wheel. It would have been easier to navigate with 4 distinct directional buttons.
458212
Using one finger for six buttons is kind of a chore. Also you can't use two of these together if you're on a PS3
4028277
Doesn't switch back and forth all of the time. You have to click it multiple times to get it to switch.
4801956
As a keyboard it works fine but one of the biggest and most annoying drawbacks is that every once in a while it will get stuck in some kind of "windows hotkey" mode at complete random. Very annoying.
3140787
Can't find a way to link the G buttons. Why do they have to make the programmable keys so difficult?
166044
not a fan of the function key being poorly placed right beside my left shift key, which was made tiny to make space for it. If i could figure out how to map this stupid function key to just operate as shift, i'd do it, but mapping programs don't recognize this very awesome function key.
2805155
I like it, but had to change how I hold it because the right click is sensitive. I find myself pushing it on accident a lot.
4388778
I enjoy the side buttons, but the middle mouse button shorted out and is now unsuable. Luckily the software for the mouse lets me rebind that button.
658671
Excel ant combo. Not very often you have to hit the key twice. Only reason for a 4 instead of a five.(Might be my fault but keys should be regulated to a specific pressure.)
4073147
The size of this keyboard is great but not that mouse pad or the dreaded short 'shift' key. Though I was able to live and get used to the mouse pad I couldn't do it with the right-hand shorter 'shift' key. In order for the up arrow to have been included on here, the shift key was sacrificed. The problem is that when you're typing and need to press the shift key, instead you click the UP arrow key and now you're cursor is somewhere else. When you type you realize that you're typing on the wrong line. Just very uncomfortable to use that short key.
3553152
Love the style and size of this keyboard.  Works great with BT.  Now, here is the issue.  I bought this as I have my PC mirrored on my big screen tv.

The first issue is that there is no dpi setting control for the mouse cursor.  This means that you cant get all the way across the super large screen with one swipe and have to swipe several times to get all the way from one side to the other side of the screen.  DPI setting would allow the sensitivity to be "turned up" so you can reach the entire screen with one swipe.

The other major issue for me is the left and right click mouse buttons.  They are right under the trackpad.  How are you supposed to hold and drag.  Very cumbersome.  The mouse buttons should have been put on the far left hand side so you could hold the mouse button with your left hand and move the trackpad with your right.

Fix these two issues and I would buy another one for sure!
673101
windows button on the mouse that CANNOT be turned off. What a feature, constantly hitting that stupid thing.
2924473
I got this mouse to increase the number of buttons available while playing MMOs. When I first got the mouse I had trouble adapting to the very light pressure needed for the left and right buttons -- I was always clicking things accidentally. I also had problems accidentally pressing the "shift" button instead of the right mouse button.

I got used to that in a couple of days so those were just temporary nits. The real problem is that the thumb buttons -- the reason I got the mouse in the first place -- require much more pressure to activate. To click them you have to push much, much harder than you have to click the left and right buttons, which means that when you try to click the thumb buttons you wind up clicking the left or right button as well since you need to hold the mouse somewhere. Theoretically I should be able to squeeze the mouse with my little finger while I press a button with my thumber, but I find that very clumsy.

This wouldn't be a problem if all the buttons on the mouse required the same light touch, but the greater pressure required for the thumb buttons leaves me dissatisfied.
3701916
Overall the keyboard is alright functionality-wise but there were some key issues that were a make or break for me.

The Esc key automatically opens your browser: There is no way to change the key from doing so, and as someone who uses this often in gaming it is a major complication.

The function keys (F1-F12) do not have a lock:  I'd gotten used to the luxury of having a function lock and not having to press FN + (F1-12) every single time, so not having that is mildly annoying especially, again- as a gamer.

UPDATE for the above ... THERE IS A FIX if you run into this problem:
he keyboard doesn't have this problem and it will operate Esc if you do it correctly.
I think you didn't choose the system after you connect the keyboard to your PC.
Please kindly follow as below to fix it.
1. Delete the "bluetooth 3.0 keyboard" from the bluetooth of your PC.
2. Switch the keyboard to be on, press the connect button, the status light is blinking.
3. Check your PC bluetooth and find "bluetooth 3.0 keyboard".
4. Click it and connected.
5. After connected, before you pressing other keys, please press Fn+e key.

The step 5 is important to solve your issue.
After the keyboard is connected, please don't press other keys first, please press Fn+e firstly to choose the system.

*** Thanks to the seller for GREAT assistance in solving this issue ***
3764641
I really like the older version that I have because it has a backspace key. I have found that the newer versions do not have this and it is very frustrating!