I can transfer data from trough a genuine Apple cable from my iPad to a PC but the same cable will not allow my iPad or iPhone 4s to charge battery using a multi point USB hub connected to a power point. how do I overcome this?
There are 3 kind of USB hubs.
Non-powered, or passive, USB hubs do not have an external power source and only pull power from the computer's USB port, limiting the maximum power to single USB (splitting).
Powered, or active, USB hubs use an external power source to bring each hub port to the same energy level as an on-system port, but not to charge them.
- Powered with Charge capability
mostly have one (or more) of the USB ports capable of charging devices