It mounts to the front of the case, for my build it's not really changed any compatibility - but I don't have any bog coolers - also it sits just above the GPU for anything that's a little longer than the 3070FE.
Here's a photo, please excuse the fact that the systems needs dusting and the cable management sorting out, it's on the to do list for one evening this week!
Sorry the image don't work, really keen to see it though.