You should read this (incredibly cringe worthy, sometimes vomit inducing) thread about USB OTG support:
https://www.mobileread.com/forums/sh...d.php?t=187802
Also this:
https://web.archive.org/web/20120918...off.com/?p=139
TL;DR you can make it work but it requires a bunch of kernel modules to bring the USB port up in OTG mode in the first place and yet more of them to add support for mass storage devices and whatever filesystem that they're formatted with. You may or may not need to use a powered USB hub as well.