Asus CROSSHAIR IV EXTREME User Manual page 59

2. JMicron JMB363 Serial ATA connectors (7-pin SATA_E1 [black])
®
This connectors is for the Serial ATA signal cables for Serial ATA optical disk
drives.
3. USB connectors (10-3 pin USB7; 10-1 pin USB89; USB1011)
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.
Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!
You can connect the USB cable to ASUS Q-Connector (USB, blue) first, and
then install the Q-Connector (USB) to the USB connector onboard.
ROG Crosshair IV Formula 2-33