Regardless of the 8K in its identify, the HDMI two.1 port can support only as superior a resolution being an external 4K Show at 60Hz refresh rate, and also display selections of 2K/144Hz and 1080p/240Hz. Apple Show limitations imply that its possible 8K/30Hz display support is limited to Windows devices. https://www.linkedin.com/posts/anhometech_anhome-usb-c-hub-hdmi-adapter-sd-card-reader-activity-7180578073875001344-MUdi?utm_source=share&utm_medium=member_desktop