Asus Maximus II Gene - Manual (Page 51)

2.5.4 PCI slot
The PCI slot supports 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 slot
This motherboard supports PCI Express x1 network cards, SCSI cards and other
cards that comply with the PCI Express specifications.
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
This motherboard has two PCI Express 2.0 x16 slots that support PCI Express
x16 2.0 graphic cards complying with the PCI Express specifications. Refer to the
figure below for the location of the slots.
PCI Express 2.0 x16_1 slot
PCI slot
PCI Express x1 slot
PCI Express 2.0 x16_2 slot
ROG Maximus II GENE 2-27