Review on 500 Watt Step Up and Down Voltage Converter Transformer with USB Charging Port, UK Power Adapter, AC 110 / 120 to 220 / 240 Volt and Vice Versa, 110V/120V/220V/240V Input Voltage - Pyle PVTC320U by John Naidu

Please note that there is a jumper on the back that needs to be changed - the default setting was 110V, although the front socket reads 220V! Worked fine after I flipped it. Pros: Works very well. delivers clean, consistent performance. Bought so I can use a 240v Commodore Amiga 1200 in the EU until I can get a US PSU for it. Cons: not suitable for travel as it's quite heavy and bulky, but if you're in the US and find you need to power something that requires 220v or 240v, this will help! The packaging it came in smelled very strongly of kerosene. The adapter has never been vented.