Can a motherboard's PCIe slot just die?

What exactly does the spec “PCIe x16 slot ” mean? pcle slot ✓ Mini PCIe to 3 PCIe 1x adapter expands 3 PCI express 1x slot via your motherboard with mini PCIe can use 3pcs PCI express card (Sound Card , Network pcle slot So, there is no singular PCI Express slot There are actually four sizes : PCI Express x1, PCI Express x4, PCI Express x8, and PCI Express x16

pcle x16 slot It's a slot of x16 size but electrically x4 This