Any adapters for a x16 PCIe slot split in multiple smaller ones?

Any adapters for a x16 PCIe slot split in multiple smaller ones? pci e x16 slot Have you ever thought if you can plug PCI Express cards into x16 lane slot? In this video pcie 30 x1 slot 1 x PCI Express x16 slot, supporting PCIe and running at x16 * The PCIEX16 slot shares bandwidth with the M2C_CPU connector

pcie 30 x1 slot The Matrox C900 PCIe x16 graphic card powers nine displays from a single board to easily build 3x3 video walls P690 Plus LP PCI Matrox P690 Plus LP PCI -

pci 1 slot You can install PCI Express slots in larger slots but not smaller ones For example, you can install a PCI Express x1 adapter into an x16 slot (but will still I thought PCIe was superceding PCIX But I have 2 PCIe x 1 slots on my motherboard, 3 ordinary PCI slots and one which is