Tap Build number 7 times to unlock developer mode.
Then go back to Settings
Now you will see a new menu option, Developer Options. Click that.
Now check that ADB Debugging is enabled by ticking its checkbox.
Connect the Yoga Tablet 2 Pro to your laptop / computer.
Go to the directory where you installed AndroidSDK, and verify it has a subdirectory called platform-tools. and enter this map.
If you are using Windows 8 or later, at the top left click 'File' in the top menu bar, and click Open Command Prompt to open a command prompt in that directory. You can alternatively also press WindowsKey+R and then enter cmd.exe and use the cd command to get your path right.
Now when your command prompt is open in your platform-tools directory of your AndroidSDK, enter 'adb devices' to get a list of all attached devices with adb debugging enabled.
You should see Baytrail********* in that list. Baytrail is the chipset or SoC of your Yoga Tablet 2 Pro.