Epson 3865X Plus - Manual (Page 135)

Installing a Math Coprocessor
Your computer has a socket on the main system board to
accommodate an Intel 80387SX, 16 MHz math coprocessor. A
math coprocessor speeds up the numeric calculations your
computer performs when using certain application software. It
also increases the speed at which graphic images are displayed
on your monitor when you use graphics-oriented software.
It is best to have your dealer install a math coprocessor for you,
since a math coprocessor is a delicate component that can be
damaged easily if it is installed incorrectly.
If you install it yourself, follow the instructions in the manual
that came with your math coprocessor. If you did not receive a
manual, you can follow the steps in this section. However, be
sure to read all of the warnings and instructions carefully so you
do not injure yourself, or damage the coprocessor or your
computer.
Caution
To avoid excess static electricity, remain as stationary as
possible when r. Static
electricity can when you
touch it.
Before you begin, you should have a cross-head screwdriver
handy in case you need to remove any option cards to access the
math coprocessor socket. It is also helpful to have a flashlight
available so you can see the coprocessor socket in detail.
Remove the math coprocessor from its package and set it aside
before you start.
Installing and Removing Options 5-29