Re: [Hampshire] USB2, how to tell

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Author: Hugo Mills
Date:  
To: Hampshire LUG Discussion List
Subject: Re: [Hampshire] USB2, how to tell

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gpg: failed to create temporary file '/var/lib/lurker/.#lk0x56969100.hantslug.org.uk.28908': Permission denied
gpg: keyblock resource '/var/lib/lurker/pubring.gpg': Permission denied
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On Thu, Aug 23, 2007 at 05:51:13PM +0100, Tim wrote:
> How can I tell if I the USB on my motherboard is USB2 or not. I
> don't want to take the server down at the moment, which I would have
> to do to be able to remove the side panels etc to check the chips
> Motherboard type (I inherited the server. Not only that I can't get
> to the usb sockets without removing the server which means taking it
> down). I had a look in dmesg and while there are some line regarding
> usb it does not really say one way or the other.


lsusb -v will tell you -- look for the Hub devices, and the bcdUSB
parameter for those.

Alternatively, the key information to look for in the kernel output
is the phrase EHCI. (AHCI and OHCI are USB 1.1 -- you will probably
have one or other of those for each USB port, too, as EHCI covers USB
2.0 only). The USB 2.0 driver is ehci_hcd.

Hugo.

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=== Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk ===
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