Dell Vostro 3470 Service Manual page 74

6 Install the:
a heat sink assembly
b WLAN card
c expansion card (optional)
d M.2 SATA SSD
e drive cage
f 3.5-inch hard drive chassis
g cooling shroud
h memory module
i front bezel
j cover
7 Follow the procedures in
74 Removing and installing components
After Working Inside Your Computer.