Sugguestion for ITX I3 motherboard for NAS, please

Can some one please suggest an ITX motherboard for I3, it will be used for setting up a NAS. Preferably  motherboard that can underclock / undervolt I3 2120 so that I don't have to buy the T version.

I read somewhere that idle power consumption of the normal 2120 is 20watt+ once underclock/undervolt and can provide for processing power when needed.

MINIX H61, perfect match