Silverleaf has several interfaces depending on the year of your coach, including a Wi-Fi for the newer coaches. My tablet is an Asus running Windows 8.1 and it has one USB port which I use for the Silverlace Silverleaf interface. The only problem with this for me is I can't charge the tablet when I have the silver leave hooked up, battery life is five or six hours so it seems to be okay. Don't know if your USB hub solution would work or not , you'll need to contact Silverleaf, they have a good help line.