Lenovo ThinkVision E20-30 User Manual page 14

7. Turn on the power to the display and computer.
8. When you install the display driver, download the driver that corresponds
to your display model from the Lenovo website at
http://support.lenovo.com.cn/. To install the driver, see the "Manually Install
the Driver for the Display" section on pages 3-5.
1-7 Display User Guide