What kind of expansion slot should you use for your video card?

What is PCIe? Understanding PCIe Slots, Cards and Lanes pcie x32 slot In real applications, insert the PCIe card into the host or server PCIe slot pcie gen 4 in gen 3 slot PCIe slots come in a variety of physically different sizes referred to by the maximum lane count they support, ie x1, x2, x4, x8, x16, and x32 A PCIe card

pcie x16 expansion slot I knew it had this X32 slot when I bought it just by the product images, but I guess I figured it was a standard type of slot in the server