The first AMD Ryzen 5 7430U mini PC I received would not play audio through HDMI because it failed to recognize the monitor as an audio output device. After numerous troubleshooting attempts, including contacting support and researching the issue online, I was unable to resolve it and returned the unit.
Fortunately, the replacement worked flawlessly. During setup, I noticed that placing the PC on top of the mouse and keyboard cables slightly deflected the bottom fan grille, causing a rubbing noise. Moving it off the cables immediately solved the problem. Otherwise, the mini PC performs exactly as expected and is ideally suited for its intended use. I anticipate many years of trouble-free service.