Acer B1-720 Service Manual page 41

Windows Security pop-up warning appears, click on Install this driver software
3.
anyway.
NOTE:
Make sure not close the Command Line interface until the driver installation is complete.
Wait until the driver is installed and the Install Complete! status appears on Command
4.
Line interface as follows.
Enable the USB debug mode on PAD.
5.
Diagnostic Utilities
Figure 2-28. Warning Message
Figure 2-29. Driver Installation Is Complete
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