Re: which command can show if usb 3.0 is used

To: debian-user mailing list <debian-user@lists.debian.org>
Subject: Re: which command can show if usb 3.0 is used
From: Geoff <unit735@bigpond.com>
Date: Mon, 31 May 2021 11:35:41 +1000
Message-id: <[🔎] aa36960f-e962-aafe-8616-bb3920c63b39@bigpond.com>
In-reply-to: <[🔎] 122838901.961034.1622423800707@mail.yahoo.com>
References: <2124956425.965724.1622420542959.ref@mail.yahoo.com> <[🔎] 2124956425.965724.1622420542959@mail.yahoo.com> <[🔎] alpine.NEB.2.23.451.2105302033500.23401@panix1.panix.com> <[🔎] trinity-a799638a-6866-4acc-8310-fc03039c3c88-1622422587772@3c-app-mailcom-bs03> <[🔎] 122838901.961034.1622423800707@mail.yahoo.com>

You should see something in your logs, this is what I get for a usb 3.1 device:

kernel: usb 2-1.2: new SuperSpeed Gen 1 USB device number 5 using xhci_hcd

USB 2 is only "high-speed":

kernel: usb 1-1.3: new high-speed USB device number 12 using xhci_hcd

Regards,
Geoff

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