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TIP:
A long beep sound will be heard if only one PSU is functioning. You can
press the Beep Off Button on the PSU to silence the beeping sound.
2.
Remove the PSU from XCubeNAS.
Push the lever of the PSU at the back panel in the indicated direction.
Pull out the PSU from the XCubeNAS.
3.
Prepare a new PSU, and push it back to the slot until you hear a click. Please make sure
that the direction of the PSU is correctly installed, to prevent any potential damage by
improper installation.