User Guide

6. Install a new M.2 solid-state drive by doing the following:

a. Align the contact edge of the new M.2 solid-state drive with the key in the slot. Then, carefully insert

the drive into the slot

1 .

b. Put the bracket in place

2 . Then, install the screws to secure the bracket 3 .

7. Reinstall the base cover assembly.

8. Turn the computer over. Connect the ac power adapter and all disconnected cables to the computer.

WWAN card (for selected models)

The following information is only for the computer with user-installable modules. Ensure that you use only a

Lenovo-authorized wireless module specifically tested for this computer model. Otherwise, the computer will

generate an error-code beep sequence when you turn on the computer.

Prerequisite

Before you start, read Appendix A “Important safety information” on page 71 and print the following

instructions.

Attention: Do not touch the contact edge of the wireless-WAN card. Otherwise the wireless-WAN card

might get damaged.

Replacement procedure

1. Disable the built-in battery. See “Disable Fast Startup and the built-in battery” on page 49.

2. Turn off the computer and disconnect the computer from ac power and all connected cables.

3. Close the computer display and turn the computer over.

4. Remove the base cover assembly. See “Base cover assembly” on page 50.

T490s and X390 User Guide