Quote:
Originally Posted by georgemk
When you connect the Kobo to the hub, it will try to charge. If the hub cannot supply the correct voltage and current then the Kobo will ignore the USB link hence it cannot be seen on the computer and therefore Calibre will not see it.
That is why it will work when connected directly and not when via the hub as the computer can supply the correct voltage and current.
If the hub has it's own power supply then it should work IF all the other devices connected to the hub haven't maxed out the power before the Kobo is added to the mix.
Hubs which take power from the computer are problematic when used with devices that try to charge themselves when connected to a USB link.
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Thank you for the explanations.