Specifications

To use a low or mid 3D graphics accelerator, you must have
a 19-inch VRT19 color monitor and ULTRIX worksystem
software that is version 4.1 or higher.
You can have only one low or mid 3D graphics accelerator
inside the system unit. Do not install a second graphics
module in a system that has a 3D graphics accelerator
module without first removing the 3D graphics accelerator.
Install a high 3D graphics accelerator module in all three
option slots, with the cable connector in option slot 0.
A high 3D graphics accelerator module rapidly generates
24-plane three-dimensional color graphics on a monitor.
To use a high 3D graphics accelerator, you must have a
19-inch VRT19 color monitor and ULTRIX worksystem
software that is version 4.1 or higher.
You can have one high 3D graphics accelerator module
inside the system unit.
To install an option module
1. If necessary, follow the instructions that came with your
worksystem software to shut down the software.
2. Turn off the system unit by pressing the 0 on the on/off
switch on the back of the unit.
3. Remove the cover from the system unit.
4. Place the loop on the antistatic wrist strap around your
wrist and clip the other end to the metal frame that
encloses the system unit.
5. If the back of the system unit has a metal cover over the
opening for the option slot you want to use, remove the two
screws that hold the cover in place and then remove the
cover.
Save the cover. You will need to replace it if you ever
remove the option module from the system unit without
reinstalling it or replacing it immediately.
4–16 Internal Hardware Options