Asus VivoMini UN45 Serie Manuel De L'utilisateur page 25

7. Align and insert the memory module into the slot (A) and press
it down (B) until it is securely seated in place. Repeat the same
steps to install the other memory module.
IMPORTANT! Always install into the upper slot first.
NOTE: The CPU model N3000 only has one DIMM memory slot.
8. Remove the screw you previously attached on the bottom
cover (A), then align and insert the bottom cover back on your
VivoMini (B).
VivoMini UN Series 25