Chapter 3. Installing Options And Replacing Hardware; Installing External Options; Installing Internal Options; Removing The Computer Cover - Lenovo ThinkStation 4157 Hardware Installation And Replacement Manual

Chapter 3. Installing options and replacing hardware

This chapter is an introduction to the features and options that are available for your computer. You can
expand the capabilities of your computer by adding memory modules, adapter cards, or drives. When
installing an option, use these instructions along with the instructions that come with the option.
Attention: Do not open your computer or attempt any repair before reading and understanding the "Important safety
information" in the ThinkStation Safety and Warranty Guide that came with your computer. To obtain a copy of the
ThinkStation Safety and Warranty Guide, go to:
http://support.lenovo.com
Note: Use only parts provided by Lenovo.

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 connectors on the rear of your computer" on page 5 and "Locating controls and
connectors on the front of your computer" on page 4 to identify the required connector, and then use the
instructions that are included with the option to help you make the connection and install any software
or device drivers that are required for the option.

Installing internal options

Important: Read "Handling static-sensitive devices" on page 3 before removing the computer cover.

Removing 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:
1. Remove any media from the drives and shut down your operating system. Turn off all attached devices.
Turn off the computer.
2. Unplug all power cords from electrical outlets.
3. Disconnect the cables attached to the computer. This includes power cords, input/output (I/O) cables,
and any other cables that are connected to the computer. 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.
4. Remove any locking devices, such as a cable lock or padlock that secures the computer cover. Open
the keylock if it is in the locked position. See Chapter 5 "Security features" on page 49.
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