[caille@caille-n76vb ~]$ lsusb -vt
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
ID 1d6b:0003 Linux Foundation 3.0 root hub
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
ID 1d6b:0002 Linux Foundation 2.0 root hub
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
ID 1d6b:0002 Linux Foundation 2.0 root hub
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
ID 1d6b:0002 Linux Foundation 2.0 root hub
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
|__ Port 1: Dev 5, If 0, Class=Wireless, Driver=btusb, 12M
ID 13d3:3362 IMC Networks Atheros AR3012 Bluetooth 4.0 Adapter
|__ Port 1: Dev 5, If 1, Class=Wireless, Driver=btusb, 12M
ID 13d3:3362 IMC Networks Atheros AR3012 Bluetooth 4.0 Adapter
|__ Port 3: Dev 4, If 0, Class=Video, Driver=uvcvideo, 480M
ID 1bcf:2883 Sunplus Innovation Technology Inc. Asus Webcam
|__ Port 3: Dev 4, If 1, Class=Video, Driver=uvcvideo, 480M
ID 1bcf:2883 Sunplus Innovation Technology Inc. Asus Webcam
[caille@caille-n76vb ~]$
Ces ports fonctionnent très bien sous Windows en USB3 et sous Linux en USB2 (via la petite rallonge USB2).