User's Manual

4-10 Chapter 4: Motherboard information
4. USB connectors (10-1 pin USB56, A-Type USB10)
These connectors are for USB 2.0 ports. Connect the USB module cable to
connector USB56, then install the module to a slot opening at the back of the
system chassis. These USB connectors comply with USB 2.0 specication
that supports up to 480 Mbps connection speed.
5. Hard disk activity LED connector (4-pin HDLED1)
This LED connector is for the storage add-on card cable connected to
the SATA or SAS add-on card. The read or write activities of any device
connected to the SATA or SAS add-on card causes the front panel LED to
light up.