Dell Latitude 3330 (Early 2013) - Manual (Page 25)

4. Unthread the speaker cable from its holder and remove the speakers from the computer.
Installing The Speakers
1. Place the speakers in its compartments and route the cable through the channels.
2. Connect the speaker cable to the I/O board.
3. Install:
a) coin-cell
b) system board
c) palmrest
d) memory
e) hard drive
f) keyboard
g) base cover
h) secure digital (SD) card
i) battery
4. Follow the procedures in After Working Inside Your Computer .
Removing The Input/Output (I/O) Board
1. Follow the procedures in Before Working on Your Computer.
2. Remove:
a) battery
b) secure digital (SD) card
c) base cover
d) hard drive
e) memory
f) keyboard
g) palmrest
h) system board
3. Disconnect the speaker cable from the I/O board.
4. Remove the I/O board from the chassis.
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