If you purchased your Apple devive in the US and are using an adapter, then get this little babe and make your life easier. Retain the original plug for when you go back to the US. One less adapter needed.
I picked up my iPad in the US and on returning to the UK found that none of my old iPod chargers/docks were capable of properly charging it. This product replaces the US plug part of the power module, connecting to an existing USB block. Charging behaviour is now correct and I have the added bonus of being able to reinstate the original module when I'm in North America.