I opened the case of my Z83-W mini to have a look and found empty solder pads for a female USB 2.0 socket. Somewhere on YouTube () a similar mini came with the socket installed and is enabled. So I soldered one on my board, booted Windows 10, and the socket is not recognized. Looking in the BIOS I see there are 4 USB ports and they are all enabled. There are 3 external USB ports and I'm guessing the 4th port is the internal one. But maybe the Bluetooth or the wifi card sits on that 4th port? I didn't disable the ports one by one to see which was which. Maybe someone has some insight here. I'd love to be able to hang a big flash drive off that internal port. Any ideas?