Lenovo IdeaPad S10-3 FR - Manual (Page 60)

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Chapter 5. Troubleshooting
The connected external
device does not work. • Do not connect or disconnect any external device
cables other than USB while the computer power is
on; otherwise, you might damage your computer.
• When using a high power consumption external
devices such as an external USB optical disk drive,
use external device power adapter. Otherwise, the
device may not be recognized, or system shut down
may result.