IBM IntelliStation M Pro Type 6868 User Manual page 42

Following is a description of the controls and status indicators on your
computer.
Power switch: This switch is used to manually turn your computer on
or off. Do not turn off your computer if the in-use light for the hard
disk drive or diskette drive is on.
Note: The power switch normally operates with a single touch.
However, in some circumstances the computer might not
immediately turn off. If this happens, hold the power switch
down for approximately 5 seconds, and the computer will then
turn off.
Power-on light: This light is on when computer power is turned on.
Hard disk drive light: This light indicates that the hard disk drive
heads are being positioned or that your computer is reading from or
writing to the hard disk.
LAN client light: This light indicates when there is communications
activity on the LAN.
Diskette eject button: This button is used to eject a diskette from the
drive.
Diskette drive light: This light indicates that the diskette drive heads
are being positioned or that your computer is reading from or writing
to a diskette.
Note: See "Using a CD-ROM drive" on page 30 for information about the
controls and status indicators for the CD-ROM drive.
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IntelliStation User Guide