My motherboard is the GA-Z68XP-UD3 and it has 1xPS/2, 8xUSB 2.0, 2xUSB 3.0, 1xHDMI, 1xS/PDIF Out, 1xIEEE 1394 (FireWire), 1xRJ-45 (Ethernet) and 6xaudio jacks.
When I hit "+" I can select 7 interfaces: Airport, FireWire, Ethernet Adapter (en1), Built-in Serial Port (1), VPN, PPPoE and 6 a 4.