Lenovo ThinkCentre A61 - Manual (Page 17)

Chapter 3. Installing options and replacing hardware
Attention
Do not open your computer or attempt any repair before reading the “Important safety
information” in the Safety and Warranty Guide that was included with your computer for
the computer. To obtain copies of the Safety and Warranty Guide, go to
http://www.lenovo.com/support.
Note: Use only the parts provided by Lenovo .
Tools required
To install some options in your computer, you might need a flat-blade or Phillips
screwdriver. Additional tools might be needed for certain options. See the
instructions that come with the option.
Installing external options
External speakers, a printer, or a scanner can be connected to your computer. For
some external options, you must install additional software in addition to making
the physical connection. When adding an external option, see “Locating controls
and connectors on the front of your computer” on page 4 and “Locating connectors
on the rear of your computer” on page 5 to identify the required connector, and
then use the instructions that come with the option to help you make the
connection and install any software or device drivers that are required for the
option.
Removing the cover
Important
Turn off your computer and wait 3 to 5 minutes to let the computer cool
before removing the computer cover.
To remove the computer cover:
1. Remove any media (diskettes, CDs, or tapes) from the drives, shut down your
operating system, and turn off all attached devices.
2. Unplug all power cords from electrical outlets.
3. Disconnect all cables attached to the computer. This includes power cords,
input/output (I/O) cables, and any other cables that are connected to the
computer.
4. Remove any locking devices such as a padlock that secure the cover.
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