Ucom 208-2 Driver Official

For Debian/Ubuntu:

sudo apt install linux-modules-extra-$(uname -r)
sudo modprobe ch341

For Fedora:

sudo dnf install kmod-ch341

No further configuration is needed for 95% of cases. ucom 208-2 driver

This is the most challenging step. Because the UCOM 208-2 is a niche product, manufacturers often rebrand the same hardware. Do not download drivers from random "driver download" websites—they are often malware-ridden.

Warning: Prolific has deliberately broken support for counterfeit and older chips in recent drivers. For Fedora: sudo dnf install kmod-ch341

In some industrial control contexts (especially older Siemens, Beckhoff, or CODESYS systems), the term "UCOM 208-2 driver" might also refer to a proprietary kernel driver for a PCIe or ISA card that implements multiple 208-2-like channels. This is rare, but when it appears in manuals, it means:

A Windows/Linux serial driver that adds automatic RS-485 direction control via RTS timing, mimicking the hardware behavior of the standalone 208-2 converter. No further configuration is needed for 95% of cases

Thus, the same name can denote: