Epson 500 Series - Manual (Page 58)

Installing a Memory Module
Your computer comes with 4MB or 8MB of memory. Four MB are
soldered directly onto the system board. You may have purchased
your computer with a 4MB memory module installed. If not, you
can increase your memory to 8MB by installing the memory
module in the socket shown above. Follow these steps:
1. Remove the as described above.
2. Lower the memory module straight down into the computer
until its connector aligns with the socket on the system board.
Make sure the hole for the attachments screw is on your left.
Connecting Optional Devices 4-13