1
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.
2
SIM card slot
If your computer has a wireless Wide Area Network (WAN) feature, it might require a Subscriber Identification
Module (SIM) card to establish a wireless WAN connection. Depending on the country of delivery, the SIM
card might be already 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 or mSATA solid-state drive
Your computer might have a wireless WAN card installed in the PCI Express Mini Card slot for wireless
WAN connections.
For some models, an mSATA solid-state drive might be installed instead of the wireless WAN card for
data storage.
5
PCI Express Mini Card slot for wireless LAN/WiMAX card
Your computer might include a wireless local area network (LAN) card or a wireless combo card for LAN
and Worldwide Interoperability for Microwave Access (WiMAX) in the PCI Express Mini Card slot for you to
establish wireless LAN/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.
6
User Guide