PCIe slot shenanigans

PCIe x8 NIC in PCIe x16 slot pcie 3 0 x4 slot PCIe Brand New: Dell $ $ shipping pcie slot splitter B650M-HDV · Build for The Most Advanced PC · Optimized VRM Design · DDR5 Memory with Protection Circuit · Reinforced Steel Slot

pcie x 16 slot It's a slot of x16 size but electrically x4 This