HP Compaq Presario,Presario M2200 Maintenance And Service Manual page 115

6. Spread the retaining tabs 1 on each side of the memory
module socket to release the memory module. (The right side
of the module rises away from the notebook.)
7. Slide the module 2 away from the socket at an angle.
✎
Memory modules are designed with security slots 3 to prevent
incorrect installation into the memory module socket.
Removing the Memory Module
Reverse the above procedure to install a memory module.
Maintenance and Service Guide
Removal and Replacement Procedures
5–15