ELECTRICAL APPLIANCES
The electrical current in Europe is 220-240 volts, whereas in the US it is 110-120 volts. A US appliance that you bring over here and plug into a wall using only an ADAPTER may be ruined. You will need to have a TRANSFORMER if you want to use your own appliances.
Laptop computer, phone and camera chargers typically have transformers that allow them to work in both the US and in Europe.
It is recommended that small electronics (such as hair dryer) be bought here in Italy.