The power supplies have a bi-color (green/amber) LED to indicate power supply status. The following tables describe the LED state and description:
| LED | Description |
|---|---|
| Off | No AC power to all power supplies |
| Solid green | 12V1 output ON and OK |
| Blinking green (1Hz) | AC present / Only +12Vsb on (PS off) or PSU in Smart standby mode |
| Solid amber | AC cord unplugged or AC power lost; with a second power supply in parallel still with AC input power |
| Blinking amber (1Hz) | Power supply warning events where the power supply continues to operate; high temp, high power, high current |
| Solid amber | Power supply critical event causing a shunt down OTP, OCP, UVP. OVP |
| Blinking green (2Hz) | Power supply firmware updating |
| Blinking green (0.33Hz) (1s Off 2s Green) | Cold redundancy mode |
| LED | Description |
|---|---|
| Off | No DC power to all power supplies |
| Solid green | 12V1 output ON and OK |
| Blinking green (1Hz) | DC present / Only +12Vsb on (PS off) or PSU in Smart standby mode |
| Solid amber | DC cord unplugged or DC power lost; with a second power supply in parallel still with DC input power |
| Blinking amber (1Hz) | Power supply warning events where the power supply continues to operate; high temp, high power, high current |
| Solid amber | Power supply critical event causing a shunt down OTP, OCP, UVP. OVP |
| Blinking green (2Hz) | Power supply firmware updating |
| Blinking green (0.33Hz) (1s Off 2s Green) | Cold redundancy mode |