I/O Board - HP ProBook 440 G8 Maintenance And Service Manual

Table 5-7 RTC battery description and part number
Description
RTC battery
Before removing the RTC battery, 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 RTC battery:
1. Use a tool to release the battery from the computer (1).
2. Disconnect the battery cable from the system board (2).
Reverse this procedure to install the RTC battery.

I/O board

To remove the I/O board, use this procedure and illustration.
Table 5-8 I/O board description and part number
Description
I/O board
I/O board cables (included in Cable Kit)
RJ-45 (network) door (included in Plastics Kit)
Before removing the I/O board, follow these steps:
40 Chapter 5 Removal and replacement procedures for authorized service provider parts
(Preparation for disassembly on page
(Bottom cover on page 30).
30).
Battery on page 31).
Spare part number
M34737-001
Spare part number
M21712-001
M23765-001
M23767-001