Re: which command can show if usb 3.0 is used

[Chuck Zmudzinski <brchuckz@netscape.net>]

On 5/30/2021 8:22 PM, Long Wind wrote:
> i have new usb 3 disk
> i want to find out if usb 3 is used when it's connected to stretch
Use something like:

sudo dmesg | grep hci

If output shows ehci, then you are using usb 2, and if output shows 
xhci, then you can use usb 3.

To make stretch use the usb 3 driver, make sure the USB 3 controller is 
enabled in the UEFI setup for your computer and use a usb 3 enabled 
port. it is usually a blue port for a usb 3 port and a black port for a 
usb 2 port.