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Installing external options
You can install external options to your computer, such as external speakers, a
printer, or a scanner. For some external options, you must install additional
software in addition to making the physical connection. When you install an
external option, see “Locating connectors, controls, and indicators on the front of
your computer” on page 7 and “Locating connectors and parts on the rear of your
computer” on page 8 to identify the required connector. Then, use the instructions
that come with the option to help you make the connection and install software or
device drivers that are required for the option.
Removing the computer cover
Attention
Do not open your computer or attempt any repair before reading and understanding the
“Important safety information” in the ThinkCentre Safety and Warranty Guide that came with
your computer. To obtain a copy of the ThinkCentre Safety and Warranty Guide,goto:
http://www.lenovo.com/support
This section provides instructions on how to remove the computer cover.
CAUTION:
Turn off the computer and wait three to five minutes to let the computer cool
before removing the computer cover.
To remove the computer cover, do the following:
1. Remove all media from the drives. Then, turn off all attached devices and the
computer.
2. Disconnect all power cords from electrical outlets.
3. Disconnect the power cord, Input/Output (I/O) cables, and all other cables that
are connected to the computer.
4. Remove any locking device that secures the computer cover, such as an
integrated cable lock or a padlock. See “Integrated cable lock” on page 49 or
“Padlock” on page 50.
14 User Guide