I just got this car and have sent an email to Hyundai UK and to MOBIS (who i think make the part). I am yet to receive a reply, but i will post it here if/when i do.
For now, i've just simply removed the USB connection and stuck my phone in the holder, using bluetooth as the connection for audio. Should i need to plus it in, i'll just have to take it out the holder, and put it behind the gear stick for now.