What is PCI Express? Do PCIe lanes, slots, and versions matter?

PCI Express

The following image shows the PCI connections of the motherboard used in DuroPC's IMB540-4 Notice 'SLOT 13' are PCIe x16 slots but only Slot 3 has an x8

pcie 20 x1 slot 4-slot Customer Rating Top-Rated · 5 · 4 & Up · 3 & Up · 2 & Up PNY

pcie 30 in 40 slot Important: You'll also have to be sure the motherboard actually has a PCI Express slot implemented The chipset is not a guarantee of that, just an