HP ProBook 4310s Maintenance And Service Manual page 93

Removal and replacement procedures
Remove the system board:
1. Release the ZIF connector 1 to which the USB board cable is attached, and then disconnect the USB board
cable from the system board.
2. Disconnect the Bluetooth module cable 2 from the system board.
3. Disconnect the modem module cable 3 from the modem module.
4. Release the SD Card Reader slot bezel 1 by pressing in on it, and then remove the bezel 2.
5. Release the two ZIF connectors 3 to which the two power button board cables are attached, and then
disconnect the cables from the system board.
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