Please help me understanding pcie lanes (Asrock X570m PRO

Is there a way to determine if my slots are running x2 or x4 lanes? m 2 slot with pcie x4 lanes SATA VS PCIE ; Interface, x1 Lane, x2 Lanes, x4 Lanes ; PCIe , 4,000 MBsec, 8,000 MBsec, 16,000 MBsec ; PCIe , 2,000 MBsec, 4,000 MBsec, 8,000 MBsec m2 pcie 40 in 30 slot PCIe is backwards compatible to the previous generations A PCIe Gen 2 card will work an a Gen 4 slot at Gen 2 speeds However, 4 PCIe lanes

m2_1 slot PCIe is backwards compatible to the previous generations A PCIe Gen 2 card will work an a Gen 4 slot at Gen 2 speeds However, 4 PCIe lanes