Dell Latitude 5490 - System Board

i. memory module
j. battery
k. base cover
l. SIM card
4. Follow the procedure in After working inside your computer.
System board
Removing system board
1. Follow the procedure in Before working inside your computer.
2. Remove the:
a. SIM card
b. base cover
c. battery
d. memory module
e. hard drive
f. SSD card
g. SSD frame
h. WLAN card
i. WWAN card (optional)
j. keyboard lattice
k. keyboard
l. heat sink
m. chassis frame
n. system fan
3. Disconnect the following cables from the system board:
a. Touchpad cable [1]
b. USH cable [2]
c. LED board cable [3]
d. Speaker cable [4]
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Removing and installing components