HP 8510w Maintenance And Service Manual page 102

Remove the system board:
1. Disconnect the following cables from the system board:
(1) RJ-11 connector cable
(2) USB board cable
(3) Audio board cable
(4) Bluetooth module cable
2.
Position the base enclosure with the rear panel toward you.
3. Remove the four black Phillips PM2.5×7.0 screws (1) and the four silver Phillips PM2.5×7.0
screws (2) that secure the system board frame to the base enclosure.
92 Chapter 4 Removal and replacement procedures