HP HEWLET HP VECTRA VA 6/XXX - Manual (Page 26)

2 How to Install Accessories In Your PC
Installing Memory
16 English
3 For each memory module, slide it into the slot at 45°. Pivot the
memory module to a perpendicular position and click into place.
Memory modules have a notch on one side that prevents incorrect
insertion. Ensure that you correctly align the notched memory
module with the socket.
4 If you need to remove a main memory module, release the retaining
clip and pull the module forward and out of the socket.
5 Install any other accessories before replacing the cover. Reconnect
all cables and power cords.
6 Check the HP Summary Screen to verify the new configuration.
Refer to "HP Summary Screen", on page 52.
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