Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Won't work with polarized 2-pin plugs

This product does not accept 'polarized' US 2-pin plugs (those with one blade wider than the other). I could not use it to charge my camera or camcorder and was forced to purchase another adapter in the UK (for $10). It did work fine for 3-pin and non-polarized 2-pin plugs so if you're certain that's all you'll need it for it will work for you.