Lenovo S540 manual Rear view, Status indicators

3

Memory-upgrade slots

Depending on the model, your computer might have one or two memory-upgrade slots. You can increase the amount of memory in your computer by installing a memory module into a memory-upgrade slot. Memory modules are available as options from Lenovo. For more information, see “Replacing a memory module” on page 74.

4

Integrated battery

Use your computer with the battery power whenever ac power is unavailable.

5

Hard disk drive, solid-state drive, or hybrid drive

Depending on the model, 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.

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.

6

Wireless LAN card slot

Your computer might have a wireless local area network (LAN) card for you to establish wireless LAN connections.

Rear view

Figure 5. Rear view

Status indicators

Your computer has several status indicators that show the status of your computer.

Chapter 1. Product overview 7