Suggestions needed for a 2 channel interface

Got the Roland Duo Capture EX and when we hooked it into the iPad (new model) it says “cannot use device” “connected USB devise is not supported” “attached accessory uses too much power”.
Can you help? If this is the case I need to return this item.

Well, figured it out. Switch on back of device has to be set to “Tab” for tablet. Working fine now.