This will probably sound familiar to most of you... In my home, we have a whole bunch of devices that can be charged via USB (two iPhones, a BlackBerry, an iPod Touch, etc ad nauseam). We also have a bunch of USB chargers, each of which has a single USB port on it. I'd like to have something permanently connected to AC power with at least 4 USB ports on it, so we can just plug devices in and don't need to go looking for a free outlet.

So here's the question: if I buy a powered USB hub, will that do the job even if I don't connect it to a PC? Ideally if you have a hub that you can personally verify will be suitable, let me know the manufacturer and model :-)

Thanks in advance!

EDIT: The solution I eventually went for was this:

Kensington 4-Port USB Charger for Mobile Devices (Europe)

There's also a US version here:

Kensington 4-Port USB Charger for Mobile Devices (USA)

It arrived yesterday, so I used it to charge the following devices, all at the same time, overnight last night:

• 32GB iPhone 3GS

• 16GB iPhone 3G

• First-generation iPod Touch

• Kensington Portable Power Pack for Mobile Devices

I can't say anything about the charging speed (as I left it overnight) but all devices were fully charged this morning.