The difference between PCIe x1, x4, x8, x16 and x32

A motherboard has a PCIe x16 expansion slot Which PCIe adapter will fit in this slot? [x1 x2

No, I don't believe it is It looks to me like pcpartpicker has assigned the Gigabyte wifi card to PCIe first, taking the top x16 slot; and then it doesn't know

pcie 40 in 30 slot PCI-E x16 Expansion Slot -- HPC-7140 Supplier: Advantech Description: 1U Rackmount Server Chassis for MircoATXATX Server board with 4 x Hot-swap Drive

pcie slot dimensions Most GPUs require a PCIe x16 slot to operate at their full potential How do you know what performance you'll get with a PCIe expansion card?