Epson ActionNote - Manual (Page 86)

4. Insert a small flathead screwdriver in the notch on top of the
cover to release it from the case. Then lift it off and set it
aside in a safe place.
Installing a Memory Module
Your computer comes with 2MB of memory soldered directly
onto the system board. You can increase your memory up to a
maximum of 8MB by installing a 2MB or 6MB memory module.
Note
If your system came with a 2MB memory module already
installed, and you want to increase the memory to 8MB, you
need to remove the 2MB module and replace it with a 6MB
module.
5-12 Connecting Optional Devices