Asus Motherboard P8Z77-M - Manual (Page 31)

1-21 Chapter 1: Product introduction
1.10 Connectors
1.10.1 Rear panel connectors
Rear panel connectors
1. PS/2 keyboard/mouse combo port 6. HDMI port
2. VGA port 7. Optical S/PDIF Out port
3. USB 3.0 ports 3 and 4** 8. DVI-D
4. Intel ® LAN (RJ-45) port 9. USB 2.0 ports 7 and 8*
5. USB 2.0 ports 5 and 6 10. Audio I/O ports
* The bottom USB port supports USB BIOS Flashback.
** USB 3_34 runs at USB3.0 speed under Windows 7 or later operating system only.