PCIe x16 splitter to create two x8 ports?

Splitter Adapter Cable https: net 2 B+M Key SSD can work via PCIe Adapter Card with 2 slots ?

Name: Servidu PCIe Splitter, 25CM 8 Pin to Dual PCIe 8 Pin Graphics Card PCI Express Power Adapter … Country of Origin: India

pcie slot configuration gen1 gen2 gen3 Now im looking for a pcie riser that splits the x16 PCIE slot into 2 times x8 slots Can get this splitter: Supermicro RSC-R2UT-2E8R 2U

pciex16 slot It's much easier on server boards with PCI-E PORT BIFURCATION it would be simple to install a dumb 16x slot adapter and get four 4x