I have an old Office Depot 4 USB hub plugged in to my USB plug in my 2013 s80. It works, but I would like to expand to one with more usb slots. I have bought many hubs on eBay and have tried them, but one of them seem to recognize more then 2-3 usb drives in my car. Is anyone using a hub with more slots than 4 that works? IF so, could you let me know?