![](/images/new-backgrounds/1284550/28455033x1.webp)
Right-Side Components
Ref | Component | Description | See Also |
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n | SIM Card Slot | Accepts a 3G SIM card for models having | P. |
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| the 3G module. |
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| NOTE: The slot still exists but cannot be |
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| used for models without the 3G module. |
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o | Smart Card | Accepts a smart card for additional | P. |
| Reader | security feature. |
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p | PCMCIA Slot | Accepts a PC card for additional | P. |
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| functions. |
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q | ExpressCard | Accepts an ExpressCard/34 or | P. |
| Slot | ExpressCard/54 for additional functions. |
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r | Battery Pack | Supplies power to your computer when | P. |
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| external power is not connected. |
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s | Super Multi | Accepts a compact disc for installing or | P. |
| Drive | loading software, accessing data, and |
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| playing music/video. |
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Operating Your Computer