Asus P5Q SE PLUS - Manual (Page 45)

ASUS P5Q SE Plus 1-33
5. USB connectors (10-1 pin USB78, USB 910, 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.
You can connect the front panel USB cable to the ASUS Q-Connector (USB,
blue) first, and then install the Q-Connector (USB) to the USB connector
onboard if your chassis supports front panel USB ports.
The USB module cable is purchased separately.
6. Optical drive audio connector (4-pin CD)
These connectors allow you to receive stereo audio input from sound sources
such as a CD-ROM, TV tuner, or MPEG card.