Why would a PCIe x16 slot be limited to PCIe x1 card?

Any adapters for a x16 PCIe slot split in multiple smaller ones? can you put a pcie x4 in a x16 slot Yes, it works just fine, obviously it's only work at x4 speed I would check whether the x16 slot can handle the power load of the candyfinity slot But yes, a PCIe x1 card will work in x1, x4, or even a x16 slot R

candy stars slot It should work just fine The port should automatically drop down to x4 You may need to get a smaller plate though