PCIe x1 to 3 x1 Slot PCI-e Express Switch Multiplier Hub GPU Riser

Why would a PCIe x16 slot be limited to PCIe x1 card? pciex1 slot A PCIe x1 slot is a type of expansion slot on a computer's motherboard that provides one lane of PCIe connectivity It is designed to support low-bandwidth pciex16 slot I cut open the back of a x1 slot on my motherboard to allow me to fit a full size GPU

pciex1_1 slot x16 slot is the most capable slot of those and if you install an x16 supported card it works at fastest x8, x4 and x1 slots are