Kontron AM4521 - Manual (Page 21)

10 AM4521
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2.8 AMC LEDs Signification
Table 2-7:AMC LEDs Signification
Indicator Color State Function
Hot Swap (HS) BLUE
On
Management power available to the module and the module can
safely be extracted
Off The module is operational and is unsafe for extraction
Long Blink Delay before module is activated
Short Blink Delay before module is de-activated
Fault or "Out of Service"
(OOS)
RED
On
Module Fault set by Shelf manager or
12V payload power not detected.
Off
No module fault
12V payload power is being supplied to board
Module Active(ACT) and “in
service”
GREEN
On 12V payload power is being supplied to board
Blink Indicates SAS disk I/O activity
Off 12V payload power is not detected