I/O Board - HP Probook 450 G9 Maintenance And Service Manual

Table 6-2 RTC battery description and part number
Description
RTC battery
Before removing the RTC battery, follow these steps:
1. Prepare the computer for disassembly (see
2. Remove the bottom cover (see
3. Disconnect the battery cable from the system board (see
Remove the RTC battery:
1. Disconnect the battery cable from the system board (1).
2. Remove the cable from the clips in the computer chassis (2).
3. Use a tool to release the battery from the computer (3).
Reverse this procedure to install the RTC battery.

I/O board

To remove the I/O board, use this procedure and illustration.
Table 6-3 I/O board description and part number
Description
I/O board
I/O board cables (included in Cable Kit)
RJ-45 (network) jack door (included in Plastics Kit)
52 Chapter 6 Removal and replacement procedures for authorized service provider parts
Preparation for disassembly on page
Bottom cover on page 40).
40).
Battery on page 50).
Spare part number
M34737-001
Spare part number
N01502-001
N01915-001
M21994-001