[USRP-users] (no subject)

Ron Economos w6rz at comcast.net
Tue Jul 18 15:37:42 EDT 2017

There is a possible work around. If you use the external power supply 
and can keep power applied after an initial firmware download, then the 
B210 will enumerate as a USB 3.0 only device.


On 07/18/2017 06:00 AM, Sirkin, Joshua F. via USRP-users wrote:
> Hi, I am trying to use a B210 with an Icron USB 3.0 Spectra 3022 range extender, found here:
>   http://www.icron.com/products/icron-brand/usb-extenders/fiber/usb-3-0-spectra-3022/
> The device is only compatible with USB 3.0 devices and not backwards compatible with USB 2.0.  I am told by Icron tech support that because the B210 seems to first enumerate as a USB 2.0 device, it will not work.  They say that the USB2.0/1.1 data channels are not connected on the Spectra 3022.  Is there any way to make the B210 enumerate as only a USB 3.0 device?  Looking at the B200 FX3 firmware, it looks like there is a config flag for disable_usb2.  Would this do what I need?  How do I build with this flag?  Any help is much appreciated.
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