When I plug a Ethernet-to-USB adapter to my Ubuntu 14.04 on the USB port. I can see the Ubuntu has an extra ethernet device. However, I want to see /dev/ttyACM* type of device.

I'm wondering why the /dev/ttyACM* is not created.

I'm using the plugable USB 2.0 Ethernet Adapater.


  • What does lsusb tell you? (and then lsusb -v <the device you is the ethernet USB adapter>) – grochmal Jul 2 '16 at 19:26
  • lsusb shows the device name. However, there is no /dev/ttyUSB or /dev/ttyACM file. I need the /dev/ttyACM file to read the device – Mike Jul 2 '16 at 19:28
  • 1
    If the device does not implement a feature, how the feature could be detected by the OS on that device? Would you mind to add lsusb -v output for your USB ethernet stick? – Serge Jul 3 '16 at 4:18

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