Asus V220IC User Manual page 52

To install a RAM module:
1. Loosen the screw of the ASUS All-in-One PC's compartment cover.
2. Pull out the compartment cover and remove it completely from
your ASUS All-in-One PC, then set it aside.
3. Remove the metal cover (on selected models) then set aside.
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ASUS All-in-One PC