User's Manual

4-18
Chapter 4: Motherboard information
5. Hard disk activity LED (HDDLED1)
The read or write activities of any device connected to the onboard SATA/sSATA ports
or SATA/SAS add-on card causes the LED to light up.
6. Message LED (MESLED1)
This onboard LED lights up to red when there is temperature warning or a BMC event
log is generated.