Aztech DSL208U

Entry for the device on m-h
 * Downloads

The USB ID for this device appears to be 1110:9031.. so the boot device (pre FW upload) would appear to be this ID incremented by one (1110:9032 if you can't count).
 * It is indicated in this document that this device is using Eagle3 (AD6486).
 * .. it seems to present itself to the host system as an Ethernet device.