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From: Dave <dave@dgmm.net>
To: freebsd-questions@freebsd.org
Subject: Re: USB physical ports
Date: Thu, 10 Sep 2015 20:55:05 +0100
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On Thursday 10 September 2015 11:43:03 Ernie Luzar wrote:
> Hello List;
> 
> I have 6 physical ports on my PC box. The boot time messages seem to say 
> that one of those ports is 480Mbps High Speed USB v2.0.
> 
> How do I determine which physical USB port is the 480Mbps High Speed port?
> 
> The following are the boot time messages about USB ports
> 
> uhci0: <Intel 82801EB (ICH5) USB controller USB-A> port 0xff80-0xff9f 
> irq 16 at device 29.0 on pci0 usbus0 on uhci0
> 
> uhci1: <Intel 82801EB (ICH5) USB controller USB-B> port 0xff60-0xff7f 
> irq 19 at device 29.1 on pci0 usbus1 on uhci1
> 
> uhci2: <Intel 82801EB (ICH5) USB controller USB-D> port 0xff20-0xff3f 
> irq 16 at device 29.3 on pci0 usbus2 on uhci2
> 
> ehci0: <Intel 82801EB/R (ICH5) USB 2.0 controller> mem 
> 0xffa80800-0xffa80bff irq  23 at device 29.7 on pci0
> usbus3: EHCI version 1.0 usbus3 on ehci0
> 
> usbus0: 12Mbps Full Speed USB v1.0
> usbus1: 12Mbps Full Speed USB v1.0
> usbus2: 12Mbps Full Speed USB v1.0
> usbus3: 480Mbps High Speed USB v2.0
> 
> ugen3.1: <Intel> at usbus3
> uhub0: <Intel EHCI root HUB, class 9/0, rev 2.00/1.00, addr 1> on usbus3
> ugen2.1: <Intel> at usbus2
> uhub1: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus2
> ugen1.1: <Intel> at usbus1
> uhub2: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus1
> ugen0.1: <Intel> at usbus0
> uhub3: <Intel UHCI root HUB, class 9/0, rev 1.00/1.00, addr 1> on usbus0
> 
> 
> Root mount waiting for: usbus3 usbus2 usbus1 usbus0
> uhub2: 2 ports with 2 removable, self powered
> uhub3: 2 ports with 2 removable, self powered
> uhub1: 2 ports with 2 removable, self powered
> Root mount waiting for: usbus3
> Root mount waiting for: usbus3
> Root mount waiting for: usbus3
> uhub0: 8 ports with 8 removable, self powered
> 

It looks like there is one high speed hub with three ports off it, each of which feed your 3 pairs of USB 1.0 ports.