On 2020-10-05, Grant Edwards <grant.b.edwa...@gmail.com> wrote:
[on a B450 tomahawk]
> It appears that I have a total of 6 USB hubs on the motherboard:
>
> $ lsusb
> Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
> Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
And with a few devices plugged in:
$ lsusb -t
/: Bus 06.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 10000M
/: Bus 05.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/1p, 480M
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
|__ Port 3: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 480M
|__ Port 8: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
|__ Port 9: Dev 3, If 0, Class=Printer, Driver=usblp, 12M
|__ Port 10: Dev 4, If 2, Class=Vendor Specific Class, Driver=ftdi_sio,
480M
|__ Port 10: Dev 4, If 0, Class=Vendor Specific Class, Driver=ftdi_sio,
480M
|__ Port 10: Dev 4, If 3, Class=Vendor Specific Class, Driver=ftdi_sio,
480M
|__ Port 10: Dev 4, If 1, Class=Vendor Specific Class, Driver=ftdi_sio,
480M
