CommentStreams:96921ad975a22e11c663b1549a8ba1f0

I just purchased the Mini ATX PSU II - Desktop ATX Power Supply raspberry pi HAT. I currently have the X728 V2.3 on my Pi 4B. How do I stack these units together so I can use ATX power and fallback to the X728 when ATX loses power? I expect maybe needing to do some coding to make them work together software side, but will I be able to use this combination as expected?