Left view
USB Dock port
This 36-pin USB Dock port allows you to supply power to your ASUS
mobile dock and charge the internal battery pack. You can also charge
your ASUS Tablet and ASUS mobile dock assembly using this port.
Battery charge indicator
This two-color LED provides a visual indication of the battery's charge
status.
Refer to the table below for details:
Color
White
Orange
OFF
TF502T
Status
Fully charged.
Charging mode.
The ASUS mobile dock is not plugged to a power source.