Hdd; Power; Serial Ata Drive Carrier Led - Supermicro AS-1020A-T User Manual

HDD: Indicates IDE channel activity. On the 1020A-T this light indicates
SATA and/or CD-ROM drive activity when fl ashing.
Power: Indicates power is being supplied to the system's power supply
units. This LED should normally be illuminated when the system is operating.
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Serial ATA Drive Carrier LED

Each Serial ATA drive carrier has a green LED. When illuminated, this green LED
(on the front of the Serial ATA drive carrier) indicates drive activity. A connec-
tion to the Serial ATA backplane enables this LED to blink on and off when that
particular drive is being accessed.
Note: The second LED on the SATA carriers is not used.
Chapter 3: System Interface
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