Lenovo IdeaPad Y550 - Manual (Page 37)

Chapter 3. Using External Devices
29
Attention:
When using a high power consumption USB device such as USB ODD, use
external device power adapter. Otherwise, the device may not be
recognized, or system shut down may result.
Y550 UG V1.0_en.book Page 29 Wednesday, December 10, 2008 4:51 PM