Asus M3A78 EM User Guide - Page 45
USB connectors 10-1 pin USB78, USB910, USB1112, Optical drive audio in connector 4-pin CD, M3A78-EM - specifications
UPC - 610839163540
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USB+5V USB_P12USB_P12+ GND NC 6. 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 480 Mbps connection speed. USB+5V USB_P10USB_P10+ GND NC USB+5V USB_P8USB_P8+ GND NC R M3A78-EM USB78 1 USB910 1 USB1112 1 USB+5V USB_P11USB_P11+ GND USB+5V USB_P9USB_P9+ GND USB+5V USB_P7USB_P7+ GND M3A78-EM USB 2.0 Connectors Never connect a 1394 cable to the USB connectors. Doing so will damage the motherboard! The USB 2.0 module is purchased separately. 7. Optical drive audio in connector (4-pin CD) This connector allows you to receive stereo audio input from sound sources such as a CD-ROM, TV tuner, or MPEG card. CD (black) Right Audio Channel Ground Ground Left Audio Channel R M3A78-EM M3A78-EM Internal Audio Connector ASUS M3A78-EM 1-33