OpenThread Radio Co-processor design allows to add Thread network capabilities to devices that do not natively support Thread.
You can build and program OpenThread Radio Co-Processor (RCP) firmware onto Nordic Semiconductor's nRF52840 Dongle. Once programmed, the dongle can be used for configuring Thread network on a Linux machine.
You need to set up the nRF Connect SDK to build and program the OpenThread Radio Co-Processor to the nRF52840 Dongle. Read the nRF Connect SDK Getting started documentation for more information.
After you set up the nRF Connect SDK, follow the steps in the Configuring a radio co-processor section for the nRF52840 Dongle (USB transport).