When your tablet is on and not connected by USB to your computer or a charger, a built-in battery powers your tablet. The LED near the Wacom logo notifies you when your battery needs to be charged.
If the LED blinks orange, your tablet's battery is getting low and needs to be charged. To charge the battery, connect your tablet with a USB cable to your computer, to a powered USB hub, or to a USB charger.
The LED is solid orange when the battery is charging.
You can also check the battery status at any time to see if your tablet needs to be charged soon.