09-14-2018 04:06 PM
After installing Windows 7 in my X140e, USB mouse and keyboard did not work. I discovered solution by going into BIOS and changing ports to 2.0 as follows:
1. Power up and press F1 repeatedly at Lenovo logo to get into Setup.
2. Select Config, then USB.
3. Disable 3.0 mode and press F10 to save.