Asus M3A79-T Deluxe - Manual (Page 44)

2-18 Chapter 2: Hardware information
2.5.4 PCI slots
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 slots.
2.5.5 Four PCI Express x16 slots
This motherboard supports four ATI CrossFireX™ PCI Express x16 graphics cards
that comply with the PCI Express specifications. With four graphics cards installed,
the motherboard can enable quad-display. Refer to the figure below for the location
of the slots.
PCI slot
PCI Express x 16_2 slot (black, at max. x8 link)
Primary PCI Express x16_3 slot (blue, at max. x16 link)
PCI Express x 16_4 slot (black, at max. x8 link)
PCI slot
Primary PCI Express x16_1 slot
(blue, at max. x16 link)
Before installing a graphics card on PCI Express x 16_4 slot, we recommend
that you connect the necessary cables to the connectors beside the slot first