HP Compaq NX4820 Maintenance And Service Manual page 160

2. Turn the USB/S-Video controller board upside down with
the USB port facing you.
3. Remove the two PM1.5×3.5 screws 1 that secure the
Bluetooth module to the USB/S-Video controller board.
4. Disconnect the Bluetooth module cable 2 from the
USB/S-Video controller board.
5. Remove the Bluetooth module 3.
Removing the Bluetooth Module
Reverse the above procedure to install the Bluetooth module.
Maintenance and Service Guide
Removal and Replacement Procedures
5–47