![](/images/new-backgrounds/1153234/15323433x1.webp)
Bottom components
Component | Description | |
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(1) | Battery bay | Holds the battery. |
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(2) | Battery release latch | Releases the battery from the battery bay. |
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(3) | Wireless module compartment (select models | Holds a wireless LAN device. |
| only) | CAUTION: To prevent an unresponsive system, replace the |
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| wireless module only with a wireless module authorized for use in |
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| the computer by the governmental agency that regulates wireless |
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| devices in your country or region. If you replace the module and |
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| then receive a warning message, remove the module to restore |
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| computer functionality, and then contact technical support through |
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| Help and Support. |
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(4) | Vents (3) | Enable airflow to cool internal components. |
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| NOTE: The computer fan starts up automatically to cool internal |
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| components and prevent overheating. It is normal for the internal |
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| fan to cycle on and off during routine operation. |
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(5) | Memory module compartment | Contains the memory module slots. |
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(6) | Hard drive bay | Holds the hard drive. |
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Bottom components 11