The 550 W AC power supply (model XN-ACPWR-550W-FB with front-to-back airflow, and model XN-ACPWR-550W-BF with back-to-front airflow ) and the 550 W DC power supply (model XN-DCPWR-550W-FB with front-to-back airflow, and model XN-DCPWR-550W-BF with back-to-front airflow ) are compatible with the 5520-24T-ACDC, 5520-24X-ACDC, 5520-48T-ACDC, and 5520-48SE-ACDC switch models .
The 550 W AC power supply has a keyed power input socket (C14).
For information on installing or replacing an AC power supply, see Replace a 550 W AC Power Supply.
The 550 W AC power supply has the status LEDs listed in 550 W AC Power Supply LED Status Indications.
| LED | Description |
|---|---|
| Green | Output on and OK |
| Blinking Green | Only 12 Vsb on or PSU in cold redundant state |
| Amber | AC cord unplugged or AC power lost with a second power supply in parallel still with AC input power and 12 Vsb must be connected together in parallel |
| Blinking amber | Power supply warning events where the power supply continues to operate high temp, high power, high current, or slow fan |
| Amber | Power supply critical event causing a shutdown; failure, OCP, OVP, or fan fail |
The 550 W DC power supply accepts the positronic plug PLAH03M400A1/AA-E1A.
For information on installing or replacing a DC power supply, see Replace Internal Power Supplies.
The 550 W DC power supply has the status LEDs listed in 550 W DC Power Supply LED Status Indications.
| LED | Description |
|---|---|
| Green | Output on and OK |
| Off | No DC input power to all power supplies |
| Blinking Green | DC input present; only 12 Vsb on (PSU off) or PSU in cold redundant state |
| Amber | DC input cord unplugged or DC input power lost with a second power supply in parallel still with DC input power |
| Blinking amber | Power supply warning events where the power supply continues to operate high temp, high power, high current, or slow fan |
| Amber | Power supply critical event causing a shutdown; failure, OCP, OVP, or fan fail |