id summary reporter owner description type status component version resolution keywords cc guest host 16548 Win7 guest does not enumerate COM port with new MacBook Pro BrendanSimon "I have a new MacBook Pro (USB-C ports only) with macOS Sierra 10.12.3. It has a FTDI232R serial device connected. Attaching the serial device causes Win7 to show the device in Device Manager with errors and it cannot enumerate a COM port. This was never a problem with my old MacBook. I tried using VirtualHere (USB over IP) between host and guest. This solution usually solves my USB problems with VB, but not in this case. It has the exact same symptoms. I tried running VirtualHere on a RaspberryPi and then the FTDI232R device successfully enumerated in the Win7 guest. Therefore I think something has changed with the USB on the new MacBook Pro, and VB needs modifications to support it properly." defect new USB VirtualBox 5.1.14 MacBook Pro Sierra 10.12.3 USB serial Windows Mac OS X