yes, it supplies power if you just plug in the adaptor and don't connect it to a computer. I can charge my Kindle and LED message board.
doesn't charge the iPhone/iPad (without a computer)! This is a summary of the situation:
iPhone: charges only if computer and power adaptor connected
iPad: does not charge at all
The hub doesn't have any indicator lights, which is disappointing for such an expensive hub. The Logitech powered USB hub had individual lights for each port.
After searching online, I found the situation is as I expected: the hub needs some "intelligence" for the iPhone to charge, just like the iPod Touch.
In short, the device asks the hub, "hey, can you supply 500mA?", and the hub has to reply for the charging to go. The good thing is, it isn't an Apple thing, they're just following the USB rules here. A solution would be to modify the hub: http://carlhutzler.com/blog/2009/07/28/usb-hub-as-an-ipodiphone-charger/ but this would disable data transfer, and I'm not going to do that to my new hub. Another solution would be to modify the cable, and in fact I saw a charging cable on ThinkGeek that probably does that. It's quite expensive though, and I'd rather buy a wall adaptor.
With so many people wanting to charge their devices, it's odd no company has made and advertised a USB hub that can charge without a computer. I also wonder about the many USB charging devices, like the power sockets with built in USB ports, if they can supply 500mA?
Summary of USB chargers:
Dumb - charges: Kindle. Probably because it only needs 100mA.
- Belkin USB hub (without computer)
- No brand USB adaptor
Intermediate - charges: iPod Touch, iPhone, NOT iPad
- Belkin USB hub, with power and computer
- Belkin adaptor
- Kensington charging dock with mini battery pack
Ultimate - charges iPad and everything else (so far)
- MacBook Pro USB port
- iPod power adaptor (the one that comes with iPhone and Apple's universal travel kit)
- iPad charger
- Taiyo travel charger