Asus P5N64 WS Professional - PCI Slots; PCI Express X1 Slot; PCI Express 2.0 X16 Slots (Blue); Universal PCI Express X16 Slots (Black and White)

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 specications. Refer to the gure below for the location
of the slots.
2.5.5 PCI Express x1 slot
This motherboard supports PCI Express x1 network cards, SCSI cards and other
cards that comply with the PCI Express specications. Refer to the gure below for
the location of the slot.
Install a PCIe x1 device to a PCIe x1 slot prior to a PCIe x16 slot.
2.5.6 PCI Express 2.0 x16 slots (blue)
This motherboard has two PCI Express 2.0 x16 slots that support PCI Express 2.0
x16 graphics cards complying with the PCI Express specications. Refer to the
gure below for the location of the slots.
2.5.7 Universal PCI Express x16 slots (black and white)
This motherboard also has two Universal PCI Express x16 slots with a maximum
speed of x16 (black) and x8 (white) link. Refer to the gure below for the location
of the slots.
PCI Express x1_1 slot
PCIe 2.0 x16_1 slot (blue @ x16 link)
PCI_2 slot
Universal PCIe x16_2 slot (black @ x16 link)
PCI_1 slot
PCIe 2.0 x16_3 slot (blue @ x16 link)
Universal PCIe x16_4 slot (white @ x8 link)