Are UAD-2 cards supported on PCIe x4 or x16 slots?

PCI Express x16 GPUs Video Graphics Cards pcie 2 0 x16 slot NVIDIA NVS 510 graphics board, Full Height Bracket , Low Profile Bracket , Four locking m-DP to DP Adapters, Four locking m-DP pcie slot sizes PCIe x16 vs Tested in Middle Earth- Shadow of War, Witcher 3, Assassin's Creed

pcie 30 x1 slot PCIe x 1 for RTX 4080 Super 30423052 B-Key x 1 + MicroSIM Slot 2230 E-Key x 1 TPM, TPM Onbaord Indicator, System LED x 1, HDD Activity x 1