Asus RS100-E4/PI2 - Manual (Page 54)

4-14 Chapter 4: Motherboard Information
4. Hard disk activity LED connector (4-pin HDLED1)
This connector supplies power to the hard disk activity LED. The read
or write activities of any device connected to the SCSI connectors or
the SATA connectors cause this LED to light up.
5. USB connector (10-1 pin USB34)
This connector is for USB 2.0 ports. This USB connector complies
with USB 2.0 specification that supports up to 480 Mbps connection
speed.
P5M2-M/RS100-E4
®
P5M2-M/RS100-E4 SCSI/SATA Card Activity LED Connector
HDLED
1
1
ADD_IN_CARD_ACT#
NC
ADD_IN_CARD_ACT#
NC
P5M2-M/RS100-E
4
®
P5M2-M/RS100-E4 USB 2.0 Connector
USB+5V USB_P4
-
USB_P4
+
GND NC
USB34
USB+5V USB_P3
-
USB_P3
+
GND