Asus P5N-T Deluxe - Manual (Page 46)

2-20 Chapter 2: Hardware information
2.5.4 PCI slot
The PCI slots support cards such as a LAN card, SCSI card, USB card, and other
cards that comply with PCI specifications. Refer to the figure below for the location
of the slot.
2.5.5 PCI Express x1 slots
This motherboard supports PCI Express x1 network cards, SCSI cards and other
cards that comply with the PCI Express specifications. Refer to the figure below for
the location of the slots.
2.5.6 PCI Express 2.0 x16 slots
This motherboard has three PCI Express x16 slots that support PCI Express x16
graphic cards complying with the PCI Express specifications. With three graphics
cards installed, the motherboard can enable tri-display. Two (blue slots) of the three
PCI Express x16 slots support PCIe 2.0 devices.
This motherboard supports 3 SLI-ready Express x16 graphics cards that comply
with the PCI Express specifications.
PCIe 2.0 x16_1 slot (blue, @x16)
PCI Express x1_2 slot
PCI Express x1_1 slot
PCIe x16_2 slot (black, @x16)
PCI slot
PCIe 2.0 x16_3 slot (blue, @x16)