Buy PCI Express X1 to X16 Low Profile Slot Extension

When I plug a GPU in the x4 slot, it runs at x1 Here's what I tried:

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pcie 30 in 40 slot 1 Answer 1 Your assumption is correct This would be a slot with only four PCIe lanes connected, but it can fit a 16-lane card This is pretty

pcie 4 card in pcie 3 slot PCIe x4 speed vs x8 speed vs x16 speed Tested with rtx 3060 ti