Owner's Manual
073-1249 Rev. B 2
© 2009, 2010 Apple Inc. All rights reserved.
PCIe Slots
Your computer’s
backplane board includes
one double-wide PCI
Express (PCIe) graphics
slot and three PCIe
expansion slots, for a total
of four slots. All four slots
support 16-lane cards.
Slot electrical specs:
• Slots 1 and 2: x16
PCIe 2.0
• Slots 3 and 4: x4
PCIe 2.0
Important: Combined
maximum power
consumption for all
four PCIe slots must not
exceed 300 W.
Required Tool
Phillips #1 screwdriver