<aside> ℹ️ If the RHR Desktop App is unable to identify your K3/0-Mini, DXmate, FlexControl knob, or other serial device, try these troubleshooting steps before contacting RHR support.

</aside>

macOS 10.14.3 or earlier


If you are running macOS 10.14.3 or earlier, the RHR app may not be able to detect any serial devices.

Please download and install the Swift 5 Runtime Support from Apple, then restart the RHR desktop app.

<aside> ⬇️ Download Swift 5 Runtime Support for Command Line Tools

</aside>

Install the latest FTDI drivers


Download and install the latest official FTDI driver package. Then reboot your Mac.

<aside> ⬇️ Download FTDI drivers v2.4.2 (latest as of August, 2020) for macOS 10.9 and above

</aside>