The Volume Up key of this keyboard is too close to the backspace key so I often input the volume up key mistakenly when I want to input the backspace key. It unlocks mute mode of my computer and leads to somewhat embarrassing situations in my office. I wish the volume up key aslo worked with the function key if I use the f1~f12 keys as default key, like the other keys such as the mute key and the volume down key. I hope you'll consider my feedback. Thanks!