I had purchased a 7 port usb hub long time ago. It was working fine. I use that for two things. First for charging my mobile phone and second for transferring file. I am not able to figure out why this thing is only providing me charging. I cannot transfer any data through the same. After connecting I enabled usb debugging and the internal storage is not appearing up in the pc. I can see the battery charging there. Even when I connect my pen drive it fails to work. The hub does not look like damage to me. What should I do to fix the problem.
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