HP EliteDesk 800 G3 SFF Hardware Reference Manual page 22

7. Open both latches of the memory module socket (1), and insert the memory module into the socket (2).
Press the module down into the socket, ensuring that the module is fully inserted and properly seated.
Make sure the latches are in the closed position (3).
NOTE:
on the memory socket.
Populate the black DIMM sockets before the white DIMM sockets.
For maximum performance, populate the sockets so that the memory capacity is spread as equally as
possible between Channel A and Channel B.
8. Repeat step 7 to install any additional modules.
9. Replace the computer access panel.
10. If the computer was on a stand, replace the stand.
11. Reconnect the power cord and any external devices, and then turn on the computer. The computer
should automatically recognize the additional memory.
12. Lock any security devices that were disengaged when the access panel was removed.
16 Chapter 2 Hardware upgrades
A memory module can be installed in only one way. Match the notch on the module with the tab