Video capture adapter Epiphan AV.io 4K USB 3.0 – external 4K HDMI/USB 3.0 capture device

The Epiphan AV.io 4K USB 3.0 is an external 4K HDMI to USB 3.0 capture device that enables direct capture of high-resolution video from HDMI sources to a computer. The adapter provides low-latency video transfer over USB 3.0 and is designed for plug-and-play use on most platforms without the need for additional drivers. Its compact, bus-powered design makes it convenient for mobile production, desktop capture setups, and environments where a simple, reliable HDMI capture solution is required.

Advantages

The device supports native 4K HDMI input and delivers consistent frame capture with minimal latency over a USB 3.0 connection. Being bus-powered eliminates the need for an external power supply, while plug-and-play compatibility reduces setup time across Windows, macOS and many Linux distributions. Its compact form factor and robust signal handling make it suitable for prolonged use in live streaming, conferencing, recording and professional production workflows.

Suitable for

Key specifications

How to use

Connect the HDMI source (camera, console or media player) to the adapter’s HDMI input, then plug the adapter into a computer USB 3.0 port using the supplied USB cable. Open your preferred recording or streaming application and select the device as the video input. No additional drivers are typically required on supported operating systems; verify the host application settings for resolution, frame rate and audio routing as needed. For stable operation, use a USB 3.0 port directly on the host device or a high-quality powered USB hub if an onboard port is unavailable.

Recommendations

For reliable 4K capture, use a direct USB 3.0 connection to the host machine and ensure the HDMI source is set to the desired resolution and frame rate before connecting. Test the capture settings in your production software prior to live events and keep firmware and application updates current to maintain compatibility.