Maintenance and Service Guide

USB board
Description Spare part number
USB board (includes bracket) L14380-001
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 36).
5. Disconnect the battery cable from the system board (see Battery on page 50).
Remove the USB board:
1. Disconnect the cable from the USB board (1).
2. Remove the Phillips M2.0×3.0 screw (2) that secures the board to the computer.
3. Lift the bracket from atop the board (3).
4. Remove the board from the computer (4).
Reverse this procedure to install the USB board.
56 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts