HP nc4000 - Notebook PC Maintenance And Service Manual page 92

After the keyboard is removed, the internal memory expansion
socket is accessible. Follow these steps to remove a memory
expansion board from the internal memory expansion socket:
1. Spread the retaining tabs 1 that secure the memory
expansion board to the socket. The board rises up at a
45-degree angle.
2. Pull the board away from the socket at a 45-degree angle 2.
Removing an Internal Memory Expansion Board
Reverse the above procedure to install the internal memory
expansion board.
Maintenance and Service Guide
Removal and Replacement Procedures
5–19