Recording ATEM Mini Pro output when USB3 is in use

Hi, newbie question here - what would be a recommended strategy to record the Program output from an ATEM Mini Pro when the USB port is already being used as a webcam? HDMI splitter on the way to the monitor into some kind of recording device? What are some options for such a device?
Thanks
Jon

Use OBS to capture the USB web cam. It can record and also provide a virtual webcam version of the USB ATEM source to any other software (+ NDA, Decklink out, Stream to anything). I've been doing this with Teams.

On a Mac you can use the ATEM as a webcam as usual and also use QuickTime to record the webcam output. In other words two applications can access the webcam at the same time.

We've been using the streaming software's recording option.

Datavideo HDR-1 H264 Recorder

Thanks all, good suggestions.