What are PCIe Slots in PC?

PCIe SSD in slot? : rLenovoLegion pcie 4 slot PCIe slots allow your motherboard to connect with your PC's most critical components and provide key functionality pcie slot gpu PCIe slots come in different physical configurations: x1, x4, x8, x16, x32 The number after the x tells you how many lanes (how data travels to

pcie 4 in pcie 3 slot ssd IPCIE16XD11 is Multiple SFF-8654 x4 to PCIe x16 Slot Expansion with Broadcom MegaRAID 9560-16i, 9560-8i, 9580-8i8e, 9500-16i, 9500-8i,