Solved: Card in HP PCIe x1 slot not recognized

So, to answer your original question, if you're happy to abandon any other PCI devices you currently have, you can choose a motherboard with more PCIe x1 slots;

On PCIe X1, X4 and X16 slots, the first 18 pins are all wired the same, so as long as the PCI-Express card fits in the PCI-Express slot, it

x1 pcie slot this mobo has three pci-e slots physically 1x16lanes ,2x1line What i found, the x16 slot is supporting only one pcie line according to

x16 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