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| Battery |
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| SIM card slot |
| 1 |
| 2 | ||
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| Memory upgrade slot |
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| PCI Express Mini Card slot for wireless WAN card |
| 3 | 4 | |||
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| PCI Express Mini Card slot for wireless LAN or WiMax |
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| Hard disk drive or |
| 5 | 6 | |||
| card |
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1
Battery
Use your computer with the battery power whenever ac power is unavailable.
2
SIM card slot
If your computer has a wireless WAN feature, it might require a Subscriber Identification Module (SIM ) card to establish a wireless Wide Area Network (WAN ) connection. Depending on the country of delivery, the SIM card might already be installed in the SIM card slot.
3
Memory-upgrade slot
You can increase the amount of memory in your computer by installing a memory module in the
4
PCI Express Mini Card slot for wireless WAN card
Your computer might have a (WAN) card installed in the PCI Express Mini Card slot for wireless WAN connections.
5
PCI Express Mini Card slot for wireless LAN or WiMAX card
Your computer includes a wireless local area network (LAN) card or Worldwide Interoperability for Microwave Access (WiMAX) card in the PCI Express Mini Card slot for you to establish wireless LAN or WiMAX connections.
6
Hard disk drive or solid-state drive
Depending on models, your computer might have a
Some models are equipped with a
Note: The hidden service partition is the reason why there is less free space than expected on your hard disk drive or
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
