The "sleep" function that can be programmed to a key or button is actually "hibernate," and it took me about 2 hours to figure that out, during which I was deep in the BIOS and administrator settings trying to figure out why my laptop wouldn't wake up after I put it to "sleep." Please fix that so "sleep" is actually "sleep". This reddit thread shows the exact same issue, and is finally the only reason why I figured it out. https://www.reddit.com/r/logitech/comments/1cd7zbf/mx_key_mini_fn_sleep_is_actually_hibernate/