How to choose the power input for Nano Cortex

I just bought voodoo lab pedal power 3 plus to power up my nano cortex.
this power supply has plugs that can send 9V 500mA, 12V 1A, 9-12V 500mA.
which should I use to power up the nano cortex??
It says that nano cortex use the input voltage as follows: 9-12V dc 600ma
I don’t know about electric stuff… I need help.

You can use 12v 1A :metal:

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I run mine with 12V 500 mA, and works fine