Thats a modding from the original case, wich is very nice and fits perfectly. But i needed a cas with a bigger bottom, to make it fittable for a Pi5 with a M2 nvme memory. So i made the bottom longer( abaout2,5 cm) and now it fits. The bottem must a bit longer also, that the adapter for the Pi5 can fit in the case! See pictures. I selcted the bottom part for Raspi, because the top adapters may disturb the cooling!