PCIe to 4 Slot PCI Expansion System Add-on Cards & Peripherals

I am thinking of buying an additional two sticks of 4 GB 1600mhz RAM, however, I only have one more PCI-E slots Would using a PCI slot for my

The size of the PCI slot doesn't seem to have a specific description Manuals only describe them as PCI Express x1 slots…but you look for

pcle slot Anyone have a suggestion on a new PC that still has a PCI slot in it? I prefer HP or Lenovo EliteDesk 800 and ThinkCentre M73

pcl slot PCI Slot x 3 30423052 B-Key x 1 Mini PCIe Slot x 1 Micro SIM Card Slot x 1