USB/audio board
NOTE: The USB/audio board spare part kit does not include the USB/audio board cables. The USB/audio
board high-power cable is available using spare part number L70820-001. The USB/audio board low-power
cable is available using spare part number L70821-001.
Table 5-4 USB/audio board description and spare part number information
Description Spare part number
USB/audio board (includes 2 USB ports and 1 audio combo jack) L70818-001
Before removing the USB/audio 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 22).
5. Disconnect the battery cable from the system board (see Battery on page 24).
Remove the USB/audio board:
1. Disconnect the power cable (1) from the USB/audio board.
2. Release the ZIF connectors (2) to which the USB/audio board cables are connected, and then disconnect
the USB/audio board cables from the system board.
3. Remove the two Phillips M2.0×4.2 screws (3) that secure the USB/audio board to the keyboard/top cover.
4. Remove the two Phillips M2.0×3.8 screws (4) that secure the USB/audio board to the keyboard/top cover.
28 Chapter 5 Removal and replacement procedures
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