Edit file File name : 77-mm-linktop-port-types.rules Content :# do not edit this file, it will be overwritten on update ACTION!="add|change|move|bind", GOTO="mm_linktop_end" SUBSYSTEMS=="usb", ATTRS{idVendor}=="230d", GOTO="mm_linktop_generic" GOTO="mm_linktop_end" LABEL="mm_linktop_generic" SUBSYSTEMS=="usb", ATTRS{bInterfaceNumber}=="?*", ENV{.MM_USBIFNUM}="$attr{bInterfaceNumber}" # Linktop HSPADataCard # ttyACM0 (if #1): Data port # ttyACM1 (if #3): Primary AT port ATTRS{idVendor}=="230d", ATTRS{idProduct}=="0001", ENV{.MM_USBIFNUM}=="01", SUBSYSTEM=="tty", ENV{ID_MM_PORT_TYPE_AT_PPP}="1" ATTRS{idVendor}=="230d", ATTRS{idProduct}=="0001", ENV{.MM_USBIFNUM}=="03", SUBSYSTEM=="tty", ENV{ID_MM_PORT_TYPE_AT_PRIMARY}="1" LABEL="mm_linktop_end" Save