HP ProOne 400 G4 20-inch Non-Touch All-in-One Business PC User Manual download pdf (Page 41)

Option board

The option board is connected to the bottom, left of the system board. Underneath the board is a connector

that connects to the system board.

For a list of available option boards, see Illustrated parts catalog on page 8.

To remove the option board:

1. Prepare the computer for disassembly (see Preparing to disassemble the computer on page 21).

2. Remove the stand (see Stand on page 21).

3. Remove the rear port cover (see Rear port cover on page 23).

4. Remove the two Phillips screws (1) that secure the board to the system board.

5. Lift the board up to disengage it from the connector underneath, and then remove the board from the

computer (2).

NOTE: DisplayPort option board shown. HDMI and serial port option boards are also available.

To install the option board, reverse the removal procedures.

Option board 33

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HP ProOne 400 G4 20-inch Non-Touch All-in-One Business PC User Manual Page 41