GPU in PCIEX4 instead of x16

pciex4 slot   Dan piggy slot machine

My mobo manual says that the x16 slot is for a GPU, but more googling has revealed that others have plugged a x1 raid controller in the slot

The physical slot on x4, x8, and x16 are all the same If it says 2 PCIe x16 slots it means that there are 2 slots on the board that are capable Can I use PCIE X4 SLOT to install Archer TX3000E? My computer cannot recognize wifi and bluetooth adapter after installing this

1_32 scale slot car track * The PCIEX4 slot shares bandwidth with the PCIEX1_123 slots The PCIEX1_123 slots will become unavailable when a PCIe x4 expansion card is * The PCIEX4 slot shares bandwidth with the PCIEX1_123 slots The PCIEX1_123 slots will become unavailable when a PCIe x4 expansion card is