Can a GPU fit in a 2-slot vertical mount?

4 slot vertical gpu mount   Dan 4 slice wide slot toaster

– For Full Tower ATX Mid-Tower Supports up to 4 slots GPU at vertical mounting position to show off in most of LIAN LI cases Includes

5000D is not going to work for you it only has 2 slot riser you need 4 slot for a 4090 there are a few cases that you can turn all the back You can bring it out behind a 2-slot GPU in a 3-slot vertical mount using something like this mate, but it does mean the PCIE x16 riser cable

boots slot osrs The Cooler Master Universal Vertical Graphics Card Holder Kit V2 has been upgraded to include a PCIe riser cable  4-pin), Occupying only One 4-pin LCD VGA Holder ARGB Vertical Graphics Card Bracket Inch LED Temperature DATA Screen AUSA SYNC GPU Support Monitor