User Guide

Mac Pro Upgrades — PCI Express/Graphics Card 167
PCI Express/Graphics Card
The Mac Pro logic board includes one double-wide PCI Express graphics slot and three PCI
Express expansion slots, for a total of four slots. The computer comes with a graphics card
installed in slot 1. You can install additional PCI Express graphics and expansion cards in the
remaining three PCI Express expansion slots.
Important: Combined maximum power consumption for all four PCI Express slots must not
exceed 300 W.
Slot 1: Double-wide
PCI Express graphics
(graphics card installed)
Slots 2–4: PCI Express
Tools
The only tool required for this procedure is a Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, and lay it on its side with the access side facing up.
Note: You may also nd it helpful to remove the hard drives and carriers and any adjacent PCI
Express cards before beginning this procedure.