what is a pcie x1 slot good for?

what is a pcie x1 slot good for? can you put pcie 1x in 16x slot 1*PCIe x4 & 2* PCIe x4 with Thermal Guard · 1*PCIe x16 with Ultra Durable™ Armor · 2*PCIe x1 candy village slot Have you ever thought if you can plug PCI Express cards into x16 lane slot? In this video

candy village slot You get dual DDR5 memory slots and, in my case, 32GB of 5600MHz RAM was installed along with two PCIe Gen4x4 NVMe SSD slots equipped with 2x

candy village slot png I cut open the back of a x1 slot on my motherboard to allow me to fit a full size GPU  In this edition of What We Want I will talk about the benefits of adding PCIe X16 slots to