Hardware - behind an internal usb hub

through a usb hub, uhub(4), that is present on the device and behind which the serial controller, ucom(4), sits:

    ubsa0: Vodafone Vodafone Mobile Connect Card - 3G, rev 2.00/0.00, addr 2
    ucom0 at ubsa0

or

    umsm0 at uhub2 port 1ugen0 at uhub4 port 2
    umsm0: Sierra Wireless, Incorporated Mini Card, rev 1.10/0.01, addr 2
    ucom0 at umsm0 portno 0