Sorry, wrong link https://www.asmedia.com.tw/product/E0CYQ4fSpaQxdjzA/f32YQ14SmApn1wNA
I've updated the original post. In any case, the question still stands - would at least like to find more available options, and understand why the ASMedia ones aren't available.
Sorry, I should have said, just one or two. But even if just one, I need the datasheet.