Asus Motherboard P8Z77-M - Manual (Page 37)

1-27 Chapter 1: Product introduction
9. Intel ® Z77 USB 3.0 connectors (20-1 pin USB3_12)
This connector is for the additional USB 3.0 ports, and complies with the USB 3.0
specificaton that supports up to 480 MBps connection speed. If the USB 3.0 front panel
cable is available from your system chassis, with this USB 3.0 connector, you can have
a front panel USB 3.0 solution.
• The USB 3.0 module is purchased separately.
• The USB 3.0 ports run at USB3.0 speed on Windows 7 or later versions.
10. Digital audio connector (4-1 pin SPDIF_OUT)
This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port(s).
Connect the S/PDIF Out module cable to this connector, then install the module to a
slot opening at the back of the system chassis.
The S/PDIF module is purchased separately.