What are the top uses of PCIe x1 Slots?

2 is a slot that can interface with SATA , PCI Express

PCIe slots are available in four sizes — x1, x4, x8, and x16 — based on how many individual PCIe lanes run to and from that slot A PCIe x1 slot

pcie x4 in x16 slot Workstation class systems offer a x16 slot for graphics and a x4 slot for higher-end PCI Express peripheral devices, while the server class

pcie 4 in pcie 3 slot PCI Express , officially abbreviated as PCIe or PCI-e It is a high-speed serial computer expansion