Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: is the usb powerful enough to charge the new ipads (ipad 3, 4 +)?  They need 2.1 amp 10+ watt from the usb port ... no mention of the usb power?
Document: Taking a 3 week trip to Europe and needed a new adapter!! This is compact and retractable so require now space!! The two usb port are amazing as 90% of my usage is for Iphone and Ipad charging! !
Took this on a trip covering 3 countries (Kenya, The Netherlands, and France) and it worked everywhere. Picked up extra fuses just in case the extra one included wasn't enough and was lucky enough not to need to swap fuses at all. I'm not a fan of the lights, I think a couple tiny ones under or above the usb ports and maybe another to know you're getting power would be more than enough.
I bought this adapter for my 13 year old son to use in Germany, Austria and Switzerland. He and his friends only needed to charge their phones. With 2 USB ports plus a plug, 3 devices could charge at the same time. It was simple to use and simple to store. It's a single unit with no additional plug in pieces. There are 4 adapters - 1 for US, 1 for Europe, 1 for UK and 1 for Australia.
I love this adapter, it is a significant upgrade over my previous world travel adapter as it includes 2 USB charging ports. This means I can leave 2 wall wart AC plugs at home and charge 3 devices at once with just this adapter. As an example: I plug my laptop into the main outlet int his adapter, my phone into one USB and my tablet into the other. I can't recommend this adapter enough, as it reduces what I need to bring when traveling.
It is very easy to use and the all in one makes it perfect as my son had one with different plugs and 2 weeks into his 10 week journey lost one of the pieces rendering it useless on most of his trip. I also love that it has 2 usb ports so we can charge many devices at once. The blue light is very bright as others mention, so prepare for that if you can't sleep with a night light. I have no problem with it.
They did not list the usb voltage and ampage but it is printed on the side of the adapter itself. I took a chance and ordered it. Surprisingly even at one amp, it still charges the Ipad 2 which is notoriously picky regarding usb chargers.The adapter itself seems solidly built. The prongs come in and out and locks in place with a decent feeling.
This unit is a great addition to my travel kit.As well as having all the plugs I need for my travels it also has 2 USB power supplies which  has meant I don't need to carry USB power supplies for my cellphone or ipad. Easy to use and now my friends have been buying them. Great product.
and immediately you have a plug adapter (even for US three prong grounded plugs) AND two handy USB 5 volt, 1 amp each, outlets for your cell phone, Kindle, iPad, etc. (NOTE: this adapter is not for appliances that require a grounded outlet - it does accept grounded appliance plugs, but it is not grounded when you plug it in.
I travel very frequently to different countries, so to carry extra/multiple items is always a pain, and to remember what kind of adapter do you need. Not only this product covers all of the possible plugs that you may need, it also allows for a possibility to plug in a cord plus 2 USB cables, so I can charge my computer and both my iPad and iPhone with just one plug. Love the product and its capabilities. Very happy!
Just bought this for a trip to Europe. Worked in Rome, Paris and London and we were staying in flats not hotels. Came in handy while waiting to leave the US as all the outlets were in use when we arrived at our gate. I plugged this adapter in, and there were now 3 plugs (the 120, and the 2 USB) instead of only 1 to share.
Answer: It only provides 1A. So it's good for all smartphones by not for iPads.