HP Compaq Presario,Presario CQ42-121 Maintenance And Service Manual page 71

3. Lift cover off the computer. The mini-card compartment cover is included in the plastics kit, spare
part number 600190-001.
NOTE:
4. Spread the retaining tabs (1) on each side of the memory module slot to release the memory
module. (The edge of the module opposite the slot rises away from the computer.)
5. Remove the module (2) by pulling it away from the slot at an angle.
NOTE:
memory module slot.
Reverse this procedure to install a memory module.
ENWW
Small tabs hold the cover in place. Firmly pull up on the cover to release the tabs.
Memory modules are designed with a notch (3) to prevent incorrect insertion into the
Component replacement procedures 61