USB board
Description Spare part number
USB board (includes cable) 809409-001
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 29).
5. Remove the optical drive (see
Optical drive on page 30).
6. Remove the bottom cover (see
Bottom cover on page 34).
To remove the USB board:
1. Position the computer upright.
2. Disconnect the larger cable from the USB board (1).
3. Disconnect the smaller cable from the USB board that routes to the power button board (2)
4. Remove the two Phillips PM2.5×3.0 screws (3) that secure the USB board to the computer.
5. Remove the USB board (4).
Reverse this procedure to install the USB board.
46 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts
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