[USRP-users] Detecting if USRP contended via USB 2.0 or USB 3.0.

Marcus Müller marcus.mueller at ettus.com
Thu Apr 16 15:03:42 EDT 2015

Hello Tyler,

the easiest way is most probably by means of asking your operating system.

If you're on linux, try

lsusb  -v -d 2500:0020|grep bcdUSB

if the value is 2.10, you're on USB3.

Generally, if you want to now that in a UHD program, get yourself your
device object, and do a query on the property tree; something like

double max_rate =

will tell you the maximum transferable rate.


On 04/16/2015 05:38 PM, Weaver, Tyler via USRP-users wrote:
> My application requires sample rates that are only available if my
> B210 connects via USB 3.0.  How can I determine through UHD how I’m
> connected?  I realize that when I run the method make on my usrp it
> prints one of these two messages to stdout.  Is there a way I can
> query to see how I’m connected?
> -- Operating over USB 2.
> -- Operating over USB 3.
> _______________________________________________
> USRP-users mailing list
> USRP-users at lists.ettus.com
> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com

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