What can I do with a PCI-E x1 slot? ard

What can I do with a PCI-E x1 slot? ard x1 pcie slot I recently got an LSI 2308, and have not had a chance to test it yet My motherboard only has one PCIE x16 slot , x1 pcie 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

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 Figure shows a motherboard with two x1 PCIe, two x16 PCIe, and three PCI expansion slots Notice that the PCIe x16 slot has a retention Gniazdo x1 ma 18 pinów z każdej strony, gniazdo x4 – 32, gniazdo x8