Hi, I'm trying for some time now to figure out if this combo can work. Is it possible to have a UMDF driver that uses the WinUSB stack to retrieve data from an external USB device that does not conform to USBAudio and has only two bulk endpoints, on one side and on the other side to create some virtual audio ports (msvad or alike)? Or is that impossible under UMDF? The os will be Vista/W7. Thanks for any replies. Christos ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.com/