USB/card reader board
Description Spare part number
USB/card reader board for use in models without WWAN (includes cable) 792778-001
USB/card reader board for use in models with WWAN (includes cable) 792769-001
Before removing the USB/card reader 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 keyboard/top cover (see Keyboard/top cover on page 29).
5. Remove the battery (see Battery on page 41).
6. Remove the WWAN/GPS module (see WWAN/GPS module on page 39).
Remove the USB/card reader board:
1. Disconnect the cable from the system board (1).
2. Remove the three Phillips PM2.0×3.0 screws (2) that secure the USB/card reader board to the computer.
3. Rotate left side of board up and pull it toward the left to remove it from connectors, and then remove
the board from the computer (3).
Reverse this procedure to install the USB/card reader board.
42 Chapter 5 Removal and replacement procedures for Authorized Service Provider parts
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