Re: which command can show if usb 3.0 is used

[Geoff]

Long Wind wrote:

Thank Geoff! with usb3 disk plugged to lenovo running buster
i see msg below, but i'm not sure if usb3 is used

May 31 10:21:18 debian kernel: [13385.174292] usb 5-6: new high-speed USB 
device number 12 using ehci-pci

Definitely looks like usb 2, the ehci driver also points to this. Is the 
interface on the PC usb 3?

What kernel are you running, mine seems to use the xhci driver even for usb 2.