Lenovo X131E manual Status indicators, System status indicators, Battery, SIM card slot

	Battery		SIM card slot
1		2
	Memory upgrade slot		PCI Express Mini Card slot for wireless WAN card
3		4
	PCI Express Mini Card slot for wireless LAN or WiMax		Hard disk drive or solid-state drive
5		6
card

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 memory-upgrade slot. Memory modules are available as options from Lenovo.

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 large-capacity, customer-upgradable hard disk drive that can meet a variety of storage demands.

Some models are equipped with a solid-state drive for data storage, making your computer lighter, smaller, and faster.

Note: The hidden service partition is the reason why there is less free space than expected on your hard disk drive or solid-state drive. This reduction is more noticeable on the solid-state drive because of its smaller capacity.

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