Epson EQUITY 386SX/16 PLUS - Manual (Page 108)

4. Install the SIMMs in the sockets closest to the right side
of the main system board first. Position each SIMM so the
notch on its edge faces the front of the computer and
place it on the left side of the tabs at an angle, as shown
below.
5. Gently push down on the SIMM and, at the same time,
guide the top of the SIMM to the right until it is vertical,
ing post
5-24 Installing and Removing Options