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4. Loosen the thumbscrew in the rear of the server cover 1 . Then, slide the server cover to the rear until
you can lift it up to completely remove it from the chassis 2 .
Notes:
a. The thumbscrew is securely installed and you need to use a tool, such as a screwdriver, to loosen it.
b. The thumbscrew is an integrated part of the server cover and it cannot be removed from the server
cover.
Figure8. Removing the server cover
Attention: For proper cooling and airow, install the server cover before turning on the server. Operating the
server for more than 30 minutes with the server cover removed might damage server components.
To reinstall the server cover, see “Installing the server cover” on page 65.
Installing, removing, or replacing optional hardware devices
This section provides instructions on how to install, remove, or replace optional hardware devices for your
server. You can expand the capabilities of your server by adding memory modules, PCI cards, or drives,
and maintain your server by replacing the failing optional hardware devices. If you are replacing an optional
hardware device, perform the removal procedure and then perform the installation procedure for the optional
hardware device that you want to replace.
Installing or removing a memory module
This section provides instructions on how to install or remove a memory module. For a list of the supported
memory modules for your server, go to http://www.lenovo.com/thinkserver. On the ThinkServer systems
page, click Products ➙ Options ➙ ThinkServer Memory.
20 ThinkServer Installation and User Guide