What Are PCIe and ?

What is PCIe ? can you put pcie 4x in 16x slot PCIe x1 x4 cards in x16 slot ✓Click here to subscribe to my YouTube channel: https: candy burst slot png I would like to be able to put a graphics card in the 16x slot and use the riser card in the 4x slot, but it seems as if that might be

can i use m2 sata in nvme slot It means the slot has 16X physical width but it will only run at 4X electrical bandwidth This is one of those combo boards that mixes outdated