Real wrote:Could you please clarify the ROLE Of the USB HUB. I have plugged my Signature 12 MTK direct to my IPAD using the CCK with the USB HUB and it seems to record fine??
Is this only for charging purposes?
The powered hub is needed to provide sufficient USB bus power to power the Signature 12. The iPad cannot supply sufficient USB bus power alone and iOS would complain that the attached USB device requires too much power, if attached directly to the Signature 12 via CCK. The powered USB hub does not provide power to charge the iPad.
Sometimes a simple un-powered USB hub will fool the iPad that the attached USB device doesn't require much power. However, this can drain your iPad's battery very quickly. A lot depends on the particular USB hub and the device attached. It's not foolproof. A powered hub is more reliable.