Lenovo IdeaPad Y510 - Manual (Page 24)

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Chapter 2. Using Your Computer
System status indicators - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
The system status indicators show the current status of your computer.
Your computer has system status indicators as follows:
a Drive in use
Blue/Flashing Blue: Data is being read from or written to the hard disk or optical
disc drive. When this indicator is on, do not put the computer
into sleep mode or turn off the computer.
b Num Lock
Blue: Number Lock function is activated. Number Lock function allows some of the
keyboard letters to act as numbers for easier numeric input.
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