The USB Capture HDMI 4K Pro is capable of capturing 4K video at 60 frames per second with 4:4:4 color fidelity. However, the maximum combinations of resolution, frame rate, color subsampling and bit depth that you can achieve will depend on your host system's USB interface and operating system.  A 20Gbps USB 3.2 Gen 2x2 interface is required for maximum performance but is not available on Mac systems.

While recent Mac systems include a Thunderbolt 4 port capable of 40Gbps, these ports are not backwards-compatible to USB3.2 Gen 2x2 at 20Gbps. USB throughput on these systems will be limited to 10Gbps or 5Gbps depending on the specific model and operating system version.

The below table outlines the combinations of resolution, frame rate, color format and chroma sampling that can be captured with the USB Capture HDMI 4K Pro on macOS, depending on the host system's USB throughput capabilities (10Gbps or 5Gbps).

Systems running Windows or Linux operating systems will have different performance capabilities. For details of USB Capture HDMI 4K Pro capabilities on these systems, please see this article: USB Capture HDMI 4K Pro Supported Resolutions and Frame Rates (Windows & Linux) - Magewell

We are in the process of validating additional resolution and frame rate combinations, and will update this article as more information is available.