Locate the AC adapter and the USB-to-micro-USB cable that goes with it. Plug the AC adapter into a power outlet and plug the micro-USB connector into the port on the right edge of the Venue 8 Pro tablet (Figure 1).
Windows 8.1 will adjust the brightness of the display based on how much light is reaching the tablet's ambient light sensor. This feature is referred to as 'adaptive brightness' and it can be disabled in Windows. If you are using the Windows Modern User Interface (MUI):