Asus A55-C User Manual page 39

7. USB 2.0 connectors (10-1 pin USB78, USB910)
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.
A55-C
A55-C USB2.0 connectors
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
The USB 2.0 module is purchased separately.
8. Speaker connector (4-pin SPEAKER)
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
A55-C
A55-C Speaker Out Connector
ASUS A55-C
USB910 USB78
SPEAKER
PIN 1
1-27