Lenovo 4221, 4220, 4222, 4215, 4219 manual Installing security features, Obtaining device drivers

4.Position the computer cover on the chassis so that the rail guides on the bottom of the computer cover engage the rails on the chassis. Then, push the cover to the front of the computer until it snaps into position.

Figure 34. Reinstalling the computer cover

5.If the computer cover is secured with thumbscrews, install them.

6.If there is a padlock available, lock the computer cover. See “Padlock” on page 43.

7.If there is an integrated cable lock available, lock the computer.

8.Reconnect the external cables and power cords to the computer. See “Locating connectors on the rear of your computer” on page 8.

9.To update your configuration, refer to Chapter 4, “Using the Setup Utility program,” on page 53.

Note: In most areas of the world, Lenovo requires the return of the defective Customer Replaceable Unit (CRU). Information about this will come with the CRU or will come a few days after the CRU arrives.

Obtaining device drivers

You can obtain device drivers for operating systems that are not preinstalled at http://www.lenovo.com/support. Installation instructions are provided in readme files with the device-driver files.

Installing security features

There are several security options available to help you prevent hardware theft and unauthorized access to your computer. In addition to physical locks, you can also prevent unauthorized use of your computer by a software lock that locks the keyboard until a correct password is typed in.

Chapter 2. Installing or replacing hardware 41