ThinkPad E550, User Manual

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Note: When you attach a USB cable to this USB connector, ensure that the USB mark is facing upward.
Otherwise the connector might get damaged.
Bottom view
Figure 5. Bottom view
1
Battery
2
Memory-upgrade slots
3
Storage drive
4
Wireless-LAN-card slot
1 Battery
Use your computer with battery power whenever ac power is unavailable.
2
Memory-upgrade slots
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.
3 Storage drive
Depending on the model, the computer might have a large-capacity, customer-upgradable hard disk drive
that can meet various storage demands.
Some models have a solid-state drive for data storage. The solid-state drive makes your computer light,
small, and fast.
Some models are equipped with a hybrid drive, which is a storage device that combines NAND flash
solid-state memory with hard disk drive technology.
Note: The hidden service partition is the reason why there is less free space than expected on your storage
drive. This reduction is more noticeable on the solid-state drive because of its smaller capacity.
4 Wireless-LAN-card slot
Your computer might have a wireless LAN card installed in this slot so that you can establish wireless
LAN connections.
Status indicators
The status indicators show the current status of your computer.
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User Guide