Hi,
I would like to know some information.
- What exactly are you trying to do or perform?
- When you say have sync with keyboard Lenovo are you referring to connect wirelessly?
- Are you trying to use the combination of FN + F2 or FN + F12?
You may refer:
https://support.microsoft.com/en-us/kb/894513
Please let us know the information in brief. We will be glad to assist you further.