PCIe Splitter?

These boards take up one PCI-E slot on your motherboard and provide you with three x1 slots to use, so essentially they are adding up two extra

And finally, the main goal: how to install two mini-PCIe cards in the one PCIe slot? Does a PCIe MultiplexerBandwidth splitter ASIC exist?

pcie 30 x4 slot This motherboard has 2 1x slot and 1 16x slot GPU: 3x RTX 3060 Ti on splitter + 2x RTX 3080; on latest hiveos stable:

pcie 40 in pcie 30 slot Apooke 8-Pin PCIe Splitter Power Cable PCI-e 8 Pin Female to Dual 8 (6+ Slot, Tool-Less Installation, PCIe Hot-Swap Drive Bay, Key Lock (M2