[Spice-devel] [Users] usb pass-through

Uri Lublin uril at redhat.com
Sun May 19 00:29:02 PDT 2013

On 05/18/2013 08:01 PM, Ryan Wilkinson wrote:
> I'm trying to get usb pass-through working for Windows IE clients.  
> Where can I get the usbclerk service install as mentioned in this email??
> On Sun, Apr 28, 2013 at 1:23 AM, Uri Lublin <uril at redhat.com 
> <mailto:uril at redhat.com>> wrote:
>     On 04/26/2013 02:41 PM, Itamar Heim wrote:
>         On 04/25/2013 07:50 PM, Ryan Wilkinson wrote:
>             Can't seem to get an answer as to if usb pass-through is
>             supported from
>             a Windows IE 8 or 9 client over Spice??
>         iirc, yes.
>         adding spice-devel though
>     Spice usbredir works on Windows clients, with some limitations:
>     1. The user has to install the WinUSB driver for the specific USB
>     device,
>         or the user has to install the usbclerk service (on the client
>     machine).
>     2. USB composite devices are not currently supported.
>     3. USB audio/video devices (isochronous) are not supported.

Code for usbclerk is available on this git repo:

Binaries are not available upstream.

To build it you'll need libwdi and windows driver kit.

After building it install/uninstall the service with:
   usbclerk.exe install
   usbclerk.exe uninstall

Also there is an NSIS installer file that you can build and use.

Alternatively you can install the WinUSB driver for each specific USB device
with other tools (e.g. zadig). Install WinUSB driver before using 
usbredir (but
can be done while remote-viewer is running).


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