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Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?

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Old 06-23-2008, 01:43 PM   #1
jeriryan
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Registered: Apr 2003
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Telling whether a flash drive is USB 2.0


If there were no markings whatsoever on a flash drive (meaning no company name or writing of any sort), how could I tell within RedHat if the drive is USB 2.0 or 1.1? RedHat mounts it automatically but I haven't been able to find much info.
 
Old 06-23-2008, 01:55 PM   #2
elliott678
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Check the output of dmesg after plugging it in, one of the first lines pertaining to the drive should say something like this if it is 2.0:
Code:
usb 5-2: new high speed USB device using ehci_hcd and address 2
If it doesn't say "high speed USB", then it is likely 1.1. If it is using "uhci_hcd" instead of "ehci_hcd", it is also likely to be 1.1.

Last edited by elliott678; 06-23-2008 at 01:57 PM.
 
  


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