appears as a link between merlin card and nit is through an usb hub inside adapter, and merlin card acts as a regular modem so this explained no need of drivers. my bad. expersscard have inside usb link.

how many usb hubs nit reported?
offtopic: I must try usb 3g modem offered by my cable company, for free with umlimited internet traffic, if iy work on my n810