What are the top uses of PCIe x1 Slots?

if the slot is open like that, you should be good to go if it's not open, you could a) use another riser to adapt the x8 to x16, or b)

Generally speaking, there are five physical sizes of PCIe cards: x1, x4, x8, x16, and x32 (FYI, PCIe x32 does exist with a maximum of 32 lanes,

pcie 40 in pcie 30 slot PCIe slots allow your motherboard to connect with your PC's most critical components and provide key functionality

pcie 4 gpu in pcie 3 slot There are two parts to identifying a PCIe x16 slot First, look for the longest PCIe slot on your motheboard Slots come in x1, x4, x8 and x16