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USB board
Description Spare part number
USB board (includes cable) 646128-001
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 39), and then remove the following components:
●
Optical drive (see
Optical drive (select models only) on page 40)
●
Keyboard (see
Keyboard on page 49)
●
Top cover (see
Top cover on page 51)
Remove the USB board:
1. Release the ZIF connector (1) to which the USB board cable is connected, and then disconnect
the USB board cable (2) from the system board.
2. Remove the Phillips PM2.5×6.0 screw (2) that secures the USB board to the base enclosure.
3. Remove the USB board (3) and cable.
Reverse this procedure to install the USB board.
58 Chapter 4 Removal and replacement procedures