Yep, exactly this. You can generally find the add-on cards available, but most don't like them for replacement and quantity in a box reasons. They also don't fi

Yep, exactly this. You can generally find the add-on cards available, but most don't like them for replacement and quantity in a box reasons. They also don't fit in some of today's high density, multi node server chassis. SFF-8639 (or U.2 as the branding is) is the way forward.