Bottom components
Item | Component | Function |
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(1) | Hard drive bay | Holds the hard drive and wireless wide area network |
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| (WWAN) module (select models only). |
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| NOTE: To prevent an unresponsive system, replace |
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| the wireless module only with a wireless module |
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| authorized for use in the computer by the |
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| governmental agency that regulates wireless devices |
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| in your country or region. If you replace the module |
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| and then receive a warning message, remove the |
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| module to restore computer functionality, and then |
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| contact technical support through Help and Support. |
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(2) | Battery bay | Holds the battery and contains the SIM slot. |
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| NOTE: The battery is preinstalled in the battery bay |
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| at the factory. |
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(3) | Battery release latch | Releases the battery from the battery bay. |
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(4) | Vent | 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 normal for the internal fan to cycle on and off during routine operation.