Dell Precision 3520 Owner's Manual page 48

3 Install the following components on the new palm rest.
a display assembly
b hinge cap
c system board
d chassis frame
e coin cell battery
f heat sink assembly
g memory module
h SSD card or hard drive
i WWAN card
j WLAN card
k keyboard
l battery
m base cover
4 Follow the procedure in
48 Removing and installing components
After working inside your computer.