I read online that if i buy a cnonector that goes from ipad to a USB , that i can use a USB drive - through iFile. But when I plug it in, the usb thing has an error and says its "too powerful".

and I cannot find the USB drive in the iFile either.

any help?

2nd question. Watching movies on a non jailbroken ipad-, has to be in mp4 mode. What about in jailbroken format/ Does it still have to be in mp4?