Originally Posted by
EWR ATC Hold
The best thing you can do is read the back of the electrical plug. If it says 110V, then you can't use it (without a proper transformer). If it says 110~240V, then all you need is the adapter and it will work fine.
I don't think so. The plug will not have useful information if it says anything at all. (Most don't.) You can buy a plug rated 110-240v at any hardware or electrical supply store, but putting it on the end of a cord does not say anything about whatever is on the other end of the cord. You have to look at the device. If it's something like a computer or DVD player that operates on a low voltage (probably DC, but that's irrelevant) with an adapter, you have to look at the adapter.
In some cases the plug may be built into the adapter - the bane of power strip users the world over, as those adapters typically cover two or three outlets - but it's still important to understand that one is checking the adapter, not the plug.