PCIE x1 card in PCIE x16 slot?

The difference between PCIe x1, x4, x8, x16 and x32 x1 pcie slot I tested PCIe x4 10Gbe NIC in a PCIe x1 slot, and here's my thoughts and results x16 slot Gniazdo x1 ma 18 pinów z każdej strony, gniazdo x4 – 32, gniazdo x8

x16pciexp slot It's a Dell Optiplex 755 Mini Tower The PCIe slot on my PC should be a PCIe slot from what I could find