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

Which PCIe Slot is best for your Graphics Card? pci e slot Riser with Three PCIe Gen3 slots 1 x16 FH 1 x8 FH and 1 x8 LP at least 2 processors R740XD CusKit The Riser from Dell™ fits into pci e slot PCIe slots allow your motherboard to connect with your PC's most critical components and provide key functionality

pcie 4 in pcie 3 slot A PCIe SSD is a high-speed expansion card that attaches a computer to its peripherals