- Logitech MX Keys k/b cannot work in wired mode over USB. I have only 2 usb ports on my laptop, so I have to sacrifice either external keyboard or mouse when MS keys run out of juice.
- The keyboard doesn't remember the illumination setting. Every time I'm back to my desk I need to switch the keys illumination on manually in the dark.
- The above would be less of the problem if they used simple combination like fn + space or tactile buttons. But no, smarty pants Logitech decided to assign this setting to a tiny flat button on the top row.