Touchpad; Bottom Cover - HP ProBook 450 G8 Maintenance And Service Manual

Before removing the I/O board, follow these steps:
1. Prepare the computer for disassembly
2. Remove the bottom cover
3. Disconnect the battery cable from the system board (see
Remove the I/O board:
1. Disconnect the cable from the larger ZIF connector (1) and smaller ZIF connector (2) on the I/O board.
2. Remove the three Phillips M2.0 × 4.0 screws (3) that secure the board to the computer, and then remove
the network jack door from the board (4).
3. Remove the board from the computer (5).
Reverse this procedure to install the I/O board.

Touchpad

To remove the touchpad, use this procedure and illustration.
Table 5-9 Touchpad description and part number
Description
Touchpad
Touchpad cable (included in Cable Kit)
Before removing the touchpad, follow these steps:
1. Prepare the computer for disassembly
2. Remove the bottom cover
3. Remove the battery (see
Remove the touchpad:
40 Chapter 5 Removal and replacement procedures for authorized service provider parts
(Preparation for disassembly on page
(Bottom cover on page 30).
(Preparation for disassembly on page
(Bottom cover on page 30).
Battery on page 31).
30).
Battery on page 31).
30).
Spare part number
M21999-001
M21713-001