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USB board
Description Spare part number
USB board for use in computer models with Intel processors (includes USB board cable) 417085-001
USB board for use in computer models with Intel or AMD processors (includes USB board cable) 455839-001
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 56).
5.
Remove the following components:
a.
Hard drive (see
Hard drive on page 61)
b.
Wireless module compartment cover (see
WLAN module on page 65)
c.
Optical drive (see
Optical drive on page 73)
d.
Keyboard (see
Keyboard on page 74)
e.
Switch cover (see
Switch cover on page 79)
f.
Display assembly (see
Display assembly on page 82)
g.
Top cover (see
Top cover on page 87)
Remove the USB board:
1. Disconnect the USB board cable (1) from the system board. The USB board cable and num lock light
cable are included in the USB board spare part kit and are also available in the Cable Kit, spare
part number 417075-001.
2. Remove the num lock light cable (2) from the clip in the base enclosure.
3. Remove the Phillips PM2.5×4.0 screw (3) that secures the USB board to the computer.
100 Chapter 4 Removal and replacement procedures