One DC power supply option, with front-to-back airflow, is available for the switch:
Power supplies are ordered separately for the base SLX 9740 switch. Power supplies are included with other switches.
LEDs on the power supplies provide information on the unit's operational status. The LEDs are located on the end of the power supply unit, arranged vertically to the left of the power cord receptacle. The following tables describe the meanings of the LEDs on the DC power supply.
| Label and Color | Description | State | Meaning |
|---|---|---|---|
| ! Amber | Fault indicator | On (Solid) | PSU fault |
| Off | No PSU fault | ||
| OUT OK (Green) | DC output good | On (Solid) | DC output OK |
| Off or blinking | DC output fail | ||
| IN OK (Green) | DC input good | On | DC input OK |
| Off | DC input fail |
For information on installing or replacing a power supply, see Replace Power Supplies.