
Removing and installing components
This section provides detailed information on how to remove or install the components from your computer.
Screw size list
Table 1. Latitude 3390 2-in-1 screw size list
Component
M2x3
M2x2
(Big
head)
M2x2
M2.5x5
M2.5x6
M2.5x2.5
(Big
head)
M2.5xL1.
4
M2x3.5
Battery
4
Power and volume buttons board
1
WLAN card
1
Power connector port
1
Type-C metal bracket
1
SSD card
1
HDD
2
System fan
2
System board
3
Keyboard shield
14
Base cover
9
Display hinges
4
I/O board
2
Touchpad board and Touchpad
metal bracket
8
Keyboard
15
Sensor board
1
Base cover
Removing the base cover
Steps
Before working inside your computer
.
2. Close the display and turn the laptop over.
3. Remove the M2.5 x 6 screws (9) that secure the base cover to the laptop.
NOTE:
Two screws near the front edge of the system have to be removed at an angle before lifting the base cover.
2
Removing and installing components
9