HP compaq Hardware Manual page 85

Hardware Upgrades
9. Insert the memory expansion module:
a. Align the keyed (notched) edge of the module with the
b. Press the module into the slot from a 45-degree angle
Inserting a memory expansion module
8–8
keyed area in the expansion slot 1.
until it is seated, then push the board downward until the
retention clips snap into place 2.
Hardware Guide