3 x PCIe 2.0 x16 (dual @ x16, triple @x16 x8 x8) 1 x PCIe 2.0 x4 2 x PCI 2.2
extern:
1 x External SATA 1 x S/PDIF Out (Optical) 1 x IEEE 1394a 1 x RJ45 port 8 Channel Audio I/O 1 x PS/2 Keyboard port(purple) 2 x USB 3.0/2.0 ports 7 x USB 2.0/1.1 ports (1 port is also for ROG Connect) 1 x ROG Connect On/Off switch 1 x Clr CMOS switch