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

All Types Of PCIe Slots Explained & Compared pcie 2 0 x16 slot What is PCI express card? How many types of PCIe cards are there? What does PCIe x8, or PCIe x16 mean? Can I use a PCIe card in a slot? pcie 30 in 40 slot Was that bad advice? Do I need to buy a x16 slot card?

pciex4 slot PCIE x16 while the RX 5600 XT has PCIE x16 I am not sure if this is due speed issues or lack of enough power on the PCIe slot, even though the GPU