14. External device
USB connection
Enter 
“setting”>”Developer options”>”Choose USB work pattern: OTG/HOST/SLAVE……..
Using USB to connect the Cyberpad and PC, the default connection mode is a synchronous mode.
You can drag the status bar to drop, appeared as the following interface:
Click 
into the USB connection hints.
“USB connected”: It means that the external memory(SD) loading is completed , and you can see the corresponding letter in the PC terminal.
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