Does a Graphics Card Have to Go in the First PCI-E Slot?

which gpu slot to use   Dan which expansion slot is used by an nvme compliant device

like: Taking a PCI Express slot and chopping it up so that you can use multiple devices

The other 4 slots work in pairs 8&16 If you utilize only the x16 slot, it works as x16, if you use the x8 slot, the x16 next to it drops to x8  Don't want to use risers Five or more pcie slots with open backs on a motherboard There are several different motherboards in Epyc,

countersink slot Yup, a dual slot graphics card will take up 2 expansion slots in your case, and hover over 2 PCIe slots if your particular motherboard has 2 slot, pcie x1 slot, pcie x4 slot, pcie x8 slot, which pcie slot to use, does it matter which