There's one in the AFF 'shop'. I got one recently and it's brilliant. Good USB current output which means it charges devices quickly. If your can't find the shop in the forum, PM @Admin
Edit: oops, sorry it's not like the one in your link with 4 power outlets. But there may be one of those in the shop.
Edit: here's 'tis: AFF Community Online Store
Compact Design with Dual USB Charging Ports!
For some reason there is no price against this and I can't buy it on the store so I'll email support later. The only problem with this one is only has one plug and I want more than that