To Switch to ON
Turn the PSU switch of the power supply unit to the ON position (marked "|").
Important
Make sure all of the PSU switches are in the ON position.
Figure: ON Position (Marked "|") of the PSU Switch on a Power Supply Unit
![](../../image/kouchiku/psu_switch_on.png)
Power is supplied to an enclosure.
For the drive enclosure, the POWER LED on the power supply unit emits green lights and the fan revolves at high speed for 30 seconds.
Figure: POWER LED on the Power Supply Unit
![](../../image/kouchiku/psu_power_on_led.png)