Compaq DESKPRO 2000 SERIES Maintenance & Service Manual page 146

6. Remove the screws securing the system board to the chassis
There are four screws securing the Pentium-based system and five screws securing the Pentium Pro-
based system board in the chassis.
7. Slide the system board out of the chassis.
Figure 5-28. Removing the Desktop System Board
To install a new system board, reverse the above procedure.
Compaq Deskpro 2000 5-33