Just bought one of these from TMN portuguese operator, and would like to share the installation process of the modem. I should say first that alltough I used linux for sometime I'm very far from an expert. Install Gnome-ppp. Eject the USB drive/modem, at least I couldn't make it work with the usb drive mounted. Start Gnome-ppp, go to setup and press "detect", the modem should appear right away. In my case I had to change the DNS settings to openDNS settings, don't know if it's operator related but it probably is. Close the setup window and insert you data on the main window, it should work when press connect, at least it did for me. Don't know if this is of any help, but I searched the net for a long time on how to use this modem on the acer or linux and found nothing useful, in fact most info told to replace this modem with the Huawei modem.