After a great deal of searching, I discovered that instead of doing a simple "/sbin/modprobe usbserial vendor=0x09d7 product=0x0100", with fedora 20 you now have to edit your grub2 config to add a generic serial device. Dmesg reported the following, so I am following directions. Please add this device to a proper driver. [ 1.391259] usb 1-1.1: new full-speed USB device number 3 using ehci-pci [ 1.478121] usb 1-1.1: New USB device found, idVendor=09d7, idProduct=0100 [ 1.478127] usb 1-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 1.478130] usb 1-1.1: Product: Novatel GPS Receiver [ 1.478133] usb 1-1.1: Manufacturer: Novatel Inc. [ 1.478135] usb 1-1.1: SerialNumber: BFN14190250 [ 1.479205] usbserial_generic 1-1.1:1.0: The "generic" usb-serial driver is only for testing and one-off prototypes. [ 1.479209] usbserial_generic 1-1.1:1.0: Tell linux-usb@xxxxxxxxxxxxxxx to add your device to a proper driver. [ 1.479212] usbserial_generic 1-1.1:1.0: generic converter detected [ 1.479345] usb 1-1.1: generic converter now attached to ttyUSB0 [ 1.479420] usb 1-1.1: generic converter now attached to ttyUSB1 [ 1.479448] usb 1-1.1: generic converter now attached to ttyUSB2 Thank you, Kirk -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html