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HP ProBook 4420s - USB Connector Board

HP ProBook 4420s
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4. Use the ODD connector (3) to lift the right side of the system board from the base enclosure (4).
5. Lift the system board up and to the right to remove the system board (5).
Reverse this procedure to install the system board.
USB connector board
Description Spare part number
USB board with cable 599524-001
Before removing the USB connector assembly, 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. Switch cover (see
Switch cover on page 58)
b. Keyboard (see
Keyboard on page 60)
c. Optical drive (see
Optical drive on page 64)
d. Speakers (see
Speakers on page 67)
104 Chapter 4 Removal and replacement procedures

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