Step Screw (Quantity) Color; M2 × 3 Mm, Flat-Head, Nylon-Coated (1) Silver; Step Color - Lenovo ThinkPad L590 Hardware Maintenance Manual

Removal steps of the M.2 solid-state drive or the M.2 Intel Optane memory in the WWAN card slot
For computer models that are installed with the Intel Optane memory, disable the Intel Optane memory
before removing it. To disable the Intel Optane memory, do the following:
1. Restart the computer. When the logo screen is displayed, press F1.
Note: If a supervisor password has been set, enter the correct password when prompted. You also can
press Enter to skip the password prompt and enter the BIOS menu. However, you cannot change the
system configurations that are protected by the supervisor password.
2. Select Config ➙ Storage ➙ Intel (R) Rapid Storage Technology ➙ Intel Optane ➙ Disable.
3. Select to preserve user data and select Yes to confirm your operation.
4. Select Disable and wait for the process to complete.
Note: The disabling process may take from a couple of minutes to hours. Do not restart the computer
until the process is completed.
5. Press F10 to save changes and exit.
Step Screw (quantity)
1
M2 × 3 mm, flat-head, nylon-coated (1)
Color Torque
Silver 0.181 Nm
(1.85 kgf-cm)
.
Chapter 8 Removing or replacing a FRU
81