Asus P5QC - Manual (Page 46)

2-20 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 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 slot.
2.5.6 PCI Express 2.0 x16 slot
This motherboard has one PCI Express 2.0 x16 slot that supports a PCI Express
x16 2.0 graphic card complying with the PCI Express specifications. Refer to the
figure below for the location of the slot.
PCIe 2.0 x16_1 slot (blue)
PCIe x1_2 slot
PCI1 slot
PCIe x1_1 slot
PCIe x1_3 slot
PCI2 slot