USB board
Description Spare part number
USB board 927925-001
USB board cable 927914-001
Before removing the USB board, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is o 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 rst unplugging the power cord from the AC outlet and then
unplugging the AC adapter from the computer.
4. Remove the bottom cover (see Bottom cover on page 32).
5. Remove the battery (see Battery on page 34).
To remove the USB board:
1. Disconnect the cable (1) from the USB board.
2. Remove the Phillips PM2.0×2.5 screw (2) and the two Phillips PM2.0×5.0 screws (3) that secure the USB
board to the computer.
3. Rotate the connector side of the board up, and then lift the board out of the computer (4).
Reverse this procedure to install the USB board.
50 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts
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