With the newer July firmware update, I can confirm that my Huawei K3765 3G modem works when plugged into the left external usb port.
Remember that you have to disable the PIN verification first. See my other post – part 2 to make a new line in the 3g_dongle.cfg if you have any issues.
Mobile data usage can be measured too, so this makes it a very good car computer, combining composite out with internet function. Drive safely 🙂