The USB-C to HDMI 2.1 8K Adapter supports a wide range of HDMI 2.1 video modes on compatible devices and displays:

• 8K at 60Hz
• 4K at 120Hz
• 4K at 60Hz
• 2K at 240Hz
• 1080p at 500Hz

On Mac computers, the maximum supported resolution is 4K at 60Hz. Your actual resolution and refresh rate depend on your device and your display.