What are the top uses of PCIe x1 Slots?

1 x pcie 3 0 x16 slot   Dan 188 slot

On the motherboard, PCIe lanes appear in x1, x2, x4, x8, and x16 variations More lanes mean more bandwidth, as well as a longer slot GPUs are usually

- p4000 graphics card installed in slot 1  Memory sockets: 2 x DDR4 Processor socket: LGA 1151 Expansion Slots: One PCI-E x16 socket One socket 1, key A Category: Others

fazi slot List of Motherboards with 3 PCI-Express x16 Slots: GIGABYTE B650 Gaming X AX V2, MSI X670E Gaming Plus WiFi, ASUS ROG Strix Z790-E Gaming WiFi II, 1 x PCIe x16 PCIe x16 2 x PCIe x16 1 x PCIe x16 Slots, Multi-GPU, Graphics, Audio, Network, RAID, SATA3, SATA2, SATA Express