Epson EL 486UC - Manual (Page 62)

1. Position the board above its slot and push it straight into the
connector, as shown below.
2. Secure the board to the back of the computer with its two
retaining screws.
3. Re-install any option cards you removed. See page 3-14.
Adding Video Memory
Your computer comes with 512KB of video memory. You can
increase your video memory to 1MB by installing four video
DRAM, 20-pin, 70ns or 80ns, 44256 DIP (Dual Inline Package)
chips. This is useful for running graphics-intensive applications
or for supporting resolutions up to 1024 x 768 on your monitor
in 256 colors.
Installing and Removing Options 3-19