How to Identify PCIe Speed for a Device on Win10

I configure it to PCIe and X4 and learn to write PCIe driver But after insert into my PC's motherboard PCIe X16 slot, I saw it worked in

PHY Layer—The PHY layer includes the 8B10B encode and decode functions for Gen1 and Gen2 It includes 128b130b encode and decode functions for Gen3 The PHY

pcie 30 in 40 slot PHY Layer—The PHY layer includes the 8B10B encode and decode functions for Gen1 and Gen2 It includes 128b130b encode and decode functions for Gen3 The PHY

pcie 4 ssd in pcie 3 slot The IO configuration of the UP Element i12 EDGE is tailored 3052 PCIe B-key x 1 2280 SATAPCIe x2 M-key x 1