![](/images/new-backgrounds/1152356/15235643x1.webp)
Bottom components
Item | Component | Description |
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(1) | Memory module/wireless module compartment | Contains the memory module slot. |
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(2) | Vents (3) | Enable airflow to cool internal components. |
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| NOTE: The computer fan starts up automatically to |
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| cool internal components and prevent overheating. It is |
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| normal for the internal fan to cycle on and off during |
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| routine operation. |
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(3) | Accessory battery connector | Connects an optional accessory battery. |
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(4) | Battery cover release latch | Releases the battery cover. |
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(5) | Battery bay | Holds the battery and the hard drive. |
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| NOTE: The battery is preinstalled in the battery bay |
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| at the factory. |
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14 | Chapter 2 External component identification |