220V power adapter for 110v iMacs, Time Machine, etc

we are moving to hong kong next month and I have 3 iMacs in our house, a 1 terabyte Time Machine backup/802.11n device and an airport.
Does anyone know what i need to do to support 220v power in Hong Kong? Does Apple make/sell devicees that convert the power?

Hi,
This article could perhaps be of some interest to you.
Generally speaking, if in doubt, you will usually find a label indicating the voltage range for AC adapters et cetera.
Jan

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