This USB hub arrived very quickly after it was ordered, a credit to the supplier. The USB hub itself also works very well, connecting to an existing USB slot via a mini USB cable (supplied with the unit), and has a small green LED `power' light to show that it is working.
The reason that I have given this product just one star is because of the supplied power adaptor. I plugged this into a socket, and when I flipped the switch, there was a loud bang, smoke, and the trip switch in my house was thrown! Thankfully the only damage was to the USB power adaptor which had failed catastrophically on its first and only use! Maybe I have been unlucky and had a faulty unit, but this is in my opinion a dangerous product. Beware!
The seller has offered to send me a replacement hub from a different manufacturer, their service overall has been exemplary.