Product Descriptions 1 2 3 4 5 6 8 NO. Name Descriptions 1 Power Inlet For charging and data transmission. 2 USB Expansion Slot Can be used to charge 5V electronic devices. 3 Power/Lock Button • Hold the button for 3 seconds to turn the tablet on, or off. • Hold the button for 8 seconds for a forced shutdown. • Press the button to wake up the screen or turn off the screen.