Asus M4A77D - Manual (Page 36)

5. USB connectors (10-1 pin USB78, USB910, USB1112)
These connectors are for USB 2.0 ports. Connect the USB module cable to any of
these connectors, then install the module to a slot opening at the back of the system
chassis. These USB connectors comply with USB 2.0 specification that supports up to
480Mbps connection speed.
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
The USB 2.0 module is purchased separately.
M4A77D
M4A77D USB2.0 connectors
PIN 1
USB+5
V
USB_P10- USB_P10+ GND NC
USB+5V USB_P9
-
USB_P9
+
GND
USB910 USB78
PIN 1
USB+5
V
USB_P8
-
USB_P8
+
GND NC
USB+5V USB_P7
-
USB_P7
+
GND
USB1112
PIN 1
USB+5
V
USB_P12- USB_P12+ GND NC
USB+5V
USB_P11- USB_P11+
GND
Chapter 1: Product introduction 1-26