Epson Epson - Manual (Page 79)

SIMM configurations (continued)
Use only tin-plated, 32-bit, 72-pin, fast-page mode SIMMs that
operate at an access speed of 70ns or faster. Be sure all the
SIMMs operate at the same speed.
Your SIMM sockets may not look exactly like the ones in the
illustrations. If you’re not sure how to install SIMMs, contact
the EPSON Connection or your Authorized EPSON Servicer
and ask for assistance.
4-16 Installing
and Removing Options