3.
CATT ERR LED (CATTERR1)
The CATT ERR LED indicates that the system has experienced a fatal or catastrophic
error and cannot continue to operate.
4.
Hard disk LED (HDLED2)
The Hard disk LED lights up or flashes when data is read from or written to the HDD.
5.
Message LED (MELED1)
The Message LED is an onboard LED that lights up to indicate an abnormal event
occurrence.
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Chapter 4: Motherboard Information