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| SIM card slot |
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| PCI Express Mini Card slot for wireless LAN card |
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| PCI Express Mini Card slot for wireless WAN card or |
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| mSATA |
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| Battery |
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| Hard disk drive or |
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1
SIM card slot
If your computer has a wireless WAN feature, it might require a Subscriber Identification Module (SIM) card to establish wireless WAN connections. Depending on the country of delivery, the SIM card might be already installed in the SIM card slot.
2
PCI Express Mini Card slot for wireless WAN card or mSATA
Your computer might have a wireless wide area network (WAN) card installed in the PCI Express Mini Card slot for wireless WAN connections.
For some models, an mSATA
3
Battery
Use your computer with the battery power whenever ac power is unavailable.
You can use the Power Manager program to adjust your power settings as needed. For details, see the help information system of the Power Manager program.
4
PCI Express Mini Card slot for wireless LAN card
Your computer might include a wireless local area network (LAN) card in the PCI Express Mini Card slot for you to establish wireless LAN connections.
5
Memory-upgrade slot
You can increase the amount of memory in your computer by installing a memory module in the
6
Hard disk drive or solid-state drive
Your computer might have a
Note: The hidden service partition is the reason why there is less free space than expected on your hard disk drive.
Status indicators
The status indicators show the current status of your computer.
System status indicators
The illuminated dot in the ThinkPad logo on the outer lid of your computer and on the palm rest works as a system status indicator.
6User Guide