Hard Disk Activity Led (Hddled1); Message Led (Mesled1) - Asus Z10PH-D16 User Manual

5.

Hard disk activity LED (HDDLED1)

This LED 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.
6.

Message LED (MESLED1)

This onboard LED lights up to red when there is temperature warning or a BMC event
log is generated.
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Chapter 2: Hardware information