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Major FRUs and CRUs
The following illustration shows the locations of the major FRUs and Customer Replaceable Units (CRUs) in
the computer. To remove the computer cover, see "Removing the computer cover" on page 82.
Note: Depending on your computer model, some of the following components might not be available.
Figure 4. Locating major FRUs and CRUs
The following table lists the major FRUs shown in the illustration above and identifies which FRUs are
also self-service CRUs or optional-service CRUs.
Notes:
• Self-service CRUs: These CRUs unplug or are secured by no more than two screws. Examples of
these types of CRUs include the keyboard, the mouse, any USB device, and the power cord. Other
self-service CRUs depending on product design might include memory modules, adapter cards, hard
disk drives, and optical drives.
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Lenovo S500 Hardware Maintenance Manual
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