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Remove the audio/infrared board:
1. Disconnect the audio/infrared board cable (1) from the system board.
2. Remove the two Phillips PM2.5×4.0 screws (2) that secure the audio/infrared board to the
base enclosure.
3. Lift the audio/infrared board (3) straight up to remove it from the base enclosure.
Reverse this procedure to install the audio/infrared board.
USB board
Description Spare part number
USB board for use only with computer models equipped with AMD processors 488886-001
USB board for use only with computer models equipped with Intel processors 480479-001
Before removing the USB board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
then unplugging the AC Adapter from the computer.
4. Remove the battery (see
Battery on page 54).
5. Remove the following components:
a. Hard drive (see
Hard drive on page 59)
b. Optical drive (see
Optical drive on page 57)
c. Switch cover (see
Switch cover on page 69)
d. Keyboard (see
Keyboard on page 71)
e. Speaker assembly (see
Speaker assembly on page 75)
98 Chapter 4 Removal and replacement procedures