PCIe x16 splitter to create two x8 ports?

Firstly can you confirm if the GPU is in PCIe x16x8_1 ? Is there anything in If PCIe_x8_2? If this slot is occupied, PCIe

PCIe x8 Gen expansion backplane with eight slots The OSS target backplane supports one PCIe Gen3 target adapter installed in the OSS target slot and up to

pcie slot pinout A PCIe or PCI express slot is the point of connection between your PC's “peripheral components” and the motherboard The term “PCIe card” and “

pcie training error slot 1 PCI-Express PCI-E 8X Slot to PCIe X8 Adapter Converter Card Right Angle 90 Degree for 1U 2U Computer Case, You can get more details about PCI-Express PCI-E