HP nx6125 - Notebook PC Maintenance And Service Manual page 156

Removal and Replacement Procedures
4. Turn the system board top-side up with the audio jacks,
USB ports, and external monitor port toward you.
5. Lift the rear edge of the PC Card assembly to disconnect it
from the system board and remove the PC Card assembly.
Removing the PC Card Assembly
Reverse the above procedures to install the PC Card assembly.
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