Bottom components
Component | Description | |
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(1) | Battery bay | Holds the battery and subscriber identity module (SIM). |
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(2) | SIM slot | Contains a wireless subscriber identity module (SIM) (select |
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| models only). The SIM slot is located inside the battery bay. |
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(3) | Vents (5) | 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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(4) | Hard drive bay | Holds the hard drive, memory module slots, WLAN module |
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| (select models only), and WWAN module (select models only). |
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(5) | Docking connector | Connects an optional docking device. |
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(6) | Charge level indicator | Displays the approximate remaining battery charge. |
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(7) | Battery release latch | Releases the battery from the battery bay. |
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(8) | Accessory battery connector | Connects an optional accessory battery. |
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(9) | Accessory battery connector door | Slides open to expose the accessory battery connector. |
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