I have a Venus GX installed on my narrowboat. I understand that the Venus GX has 2 USB ports but only one is capable of data transfer while the other can only supply 5V. I would like to connect Zuuvi Bluetooth temperature sensors via a Bluetooth/USB dongle AND connect a GX Tank 140 to monitor fuel and water tanks. Is this possible by using a 2-port USB hub connected to the Venus GX's port that supports data transfer?