The manufacturers listed just make the controller chips in a drive or card reader etc. Not the drive itself. So you won't be able to use them to find a drive that works. Check the forum for posts from Duncan - they helped me - but prepare to get frustrated if you were expecting to use a big...

I bought the X5 on Fiio's statement that OTG would be supported in FW2.0. Unfortunately, it wasn't mentioned that the USB controller had to be Phison, Skymedi or a couple of others   Has anyone got a full-size SD card card reader or min 128gb flash drive working on OTG? Needless to say none of...

I bought the X5 on Fiio's statement that OTG would be supported in FW2.0 - they didn't say provided the USB controller was Phison, Skymedi or a couple of others   Has anyone got a full-size SD card card reader or min 128gb flash drive working on OTG? Needless to say none of mine do   Fiio's...