Does it matter which PCIe slot I put my graphics card in?

On the rear of the card is a full-sized 80mm slot, compatible with up to PCIe speeds and protected by an extra heat shield As PCGamer

The question is: had anyone managed to add any type of dedicated graphics card to the system to the PCIe slot? I know that it's a gen 2 PCIe,

what''s adjusted to fit the ad slot_ PCI Express slots are configured on a motherboard PCIe can scale from one to 32 separate lanes; it's usually deployed with 1, 4, 8, 12, 16 or 32

what happens if you miss your eurotunnel slot The x8 slots are PCIE , and for network or SSD adapters Not sure if the 8 lanes are shared, or if it's x8 per PCIE slot Since it's PCIE