HP ProLiant ML570 G4 Server - Manual (Page 21)

Component identification 21
Item Description
2 Failure LED (primary power supply)
3 Power LED (redundant power supply)
4 Failure LED (redundant power supply)
Power LED
(green) Failure LED
(amber) Status
Off Off No AC power to all power supply units
Off On No AC power to this power supply unit only or power supply failure
(includes over voltage and over temperature)
Flashing Off AC present/Standby outputs on
On Off Power supply DC outputs On and OK
Off Flashing Power supply failure (current limit)
Hot-plug fans
Item Description Configuration
1 Fan 1 Redundant
2 Fan 2 Primary
3 Fan 3 Redundant
4 Fan 4 Primary
5 Fan 5 Redundant
6 Fan 6 Primary