A serial port adapter that converts USB to COM to serial port (TTY) signals can be installed on Linux.

For the task of obtaining control via a serial port, various USB-COM adapters are used.

Such devices can be used to control the radio using RTS and DTR signals. These signals are output on a male D-SUB connector DB-9 (m) or 9-pin COM.

This article will talk about installing a driver for a “silver” cable with a transparent casing, the NONAME adapter, which is defined in lsusb as "ID 0ea0:6858 Ours Technology, Inc. OTi-6858 serial adapter".

Appearance of USB-COM adapter OTi-6858:

On-Off switch (does not affect the operation of the DTR and RTS contacts, apparently it is for something else)

Internals of the USB-COM adapter OTi-6858:

Installing the driver on Linux

If you just plug the adapter into the USB connector, nothing happens. in devices ls /dev/tty* the device does not appear.

How to install the driver for the serial port adapter 0ea0:6858 Ours Technology, Inc. OTi-6858?

Found out here what is the name of the kernel module -oti6858.

Loading the driver module:

sudo modprobe oti6858

And reboot the computer.

This time the device was recognized by the operating system as "/dev/ttyUSB0". Moreover, the connection is “hot”, i.e. When connected to a USB connector, the adapter immediately appears in devices (“/dev/”).

Forced loading of a module in files /etc/modules или /etc/modules-load.d/*.conf. I didn't. It works without it.

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