CDC
Communication Device Class - Abstract Control Model (CDC-ACM) This USB class is usually used for serial port emulation and as a modem interface. The class is also often used in combination with older software which previously used RS-232 to communicate with an external device.
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Accessing CDC
Accessing CDC on Linux
On Linux no drivers are needed, the device should show up as /dev/ttyACM0 or similar. "sudo screen /dev/ttyACM0 115200" can be used to access the device.
Accessing CDC on Windows
On Windows 8.1 and below the "usbser" driver is not automatically assigned to the CDC-ACM device. An .inf file for the CDC-ACM device must be installed on these older systems. The device can be accessed via COM port emulation programs e.g. PuTTY.
Accessing CDC on macOS
On macOS no drivers are needed, the device should show up as /dev/tty.usbmodem13245678 or similar. The "screen" terminal program can be used to access the device.