Jbko59 Hi there,
All our PC support 4K. About 5.1 sound, you need an HDMI splitter that can handle audio extraction and splitting. Some splitters are designed to separate the audio and video signals. Look for a splitter that supports audio de - embedding, which means it can extract the multi - channel audio (5.1 surround sound) from the HDMI signal and send it to an audio receiver. Make sure the splitter supports the appropriate HDMI version (e.g., HDMI 2.0 or higher for better audio - video quality and support for advanced audio formats).
