3.
Storage device activity LED (HDDLED1)
This LED is reserved for the storage devices connected to the onboard M.2, or SATA/
SAS add-on card. The read or write activities of any device connected to the onboard
M.2, or SATA/SAS add-on card causes the rear panel LED to light up.
4.
Message LED (MESLED1)
This onboard LED lights up to red when there is a BMC event log is generated.
4-10
Chapter 4: Motherboard Information