Epson Endeavor User Manual page 55

Before you install SIMMs, check the following guidelines to
ensure that they will work properly:
Use only 36-bit, fast-page mode SIMMs that operate at an
access speed of 70ns (nanoseconds) or faster. Be sure all the
SIMMs operate at the same speed.
Use the correct SIMM configuration to add the amount of
memory you want. See the table above.
Your computer can use any SIMM that complies with
industry standards; however, it is best to use Epson SIMM
option kits to ensure reliability and compatibility.
Once you have the SIMMs you need, you can install them in
your computer. Follow the instructions below.
2-12 Installing and Removing Options