Step 16
Remove the DVD drive by lifting the right edge up and out of the computer.
Step 17 — Modem
Turn the G4 over.
Using a 5 mm nut driver or needle-nose pliers, remove the hex nut from the modem.
Step 18
Lift the modem out by pulling up and to the right.
The plastic shielding on the modem may catch on the computer's case. Rocking the modem from side to side will help free the modem.