USB Control Center - one printer woks, one does not

I have a R7900P Nighthawk (Firmware V1.4.1.68_1.3.28) and have installed the USB Control center on 2 laptops (Windows 10), and can control two printers attached to the router via a USB hub. I also have a tower unit (Windows 7) with the control center installed. I can use one printer (Brother) via the center, but the other printer (HP) is recognized, but in "manual" mode.  I've re-installed the HP driver several times and rebooted the computer, but the control center still says the HP is in manual mode.  I need to somehow get the HP set to auto. Frustrated.