54
Chapter 5. Troubleshooting
The connected external
device does not work.
•
Do not connect or disconnect any external device
cables other than Plug and Play (PnP) device 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.
Summary of Contents for IdeaPad U550
Page 1: ...U550 User Guide V1 0 cover_1 4 Lenovo IdeaPad U550 User Guide V1 0 ...
Page 6: ......
Page 21: ...Chapter 1 Getting to know your computer 7 Bottom view f e a b c d ...
Page 129: ...Appendix E Notices 115 Lenovo Product Service Information Japanese VCCI Class B Statement ...
Page 144: ...New World New Thinking TM www lenovo com Lenovo China 2009 P N 147002654 Printed in China ...