3820 HD  (250-3572)       Adding Optional Equipment     Faxback Doc. # 1790

Adding a Serial Device:

* Connect a Serial Mouse (25-2001),  Fax/Modem (25-3532), or other
serial device to your computer's built-in serial port.

* Add an External VGA Monitor to your computers built-in Video Port.

* Add External Keyboard (25-3042).to your computer's built-in external
  keyboard port.

Note:  Both the computer's keyboard and an external keyboard can be used at
the same time with the computer.

* Optional Math Coprocessor to make programs that graphical design programs
or programs that perform a large number of mathematical computations require
your computer to do a lot of work.  These types of programs can take
additional time to run unless you have a math coprocessor in you computer.
A coprocessor allows your computer to run these types of programs much
faster.

Cautions:

Be sure you touch a grounded metal object before handling the coprocessor.

Be sure to correctly position the math coprocessor.  Once the math
coprocessor is installed, you must use a special chip extraction tool to
remove the coprocessor.

* You can add an External Disk Drive (25-1087).

You can connect an external floppy disk drive to your computer's parallel
port. Refer to the floppy disk drive's manual for installation instructions.

(jej-05/10/94)