PCIe Speeds and Limitations

SSD using PCIE adaptor not detected m 2 slot with pcie x4 lanes I bought the adata drive knowing that both slots support pcie x4 This is really frustrating since I expected at least 2900 read speed 0 m2 vs nvme slot 2 slots with x4 PCIE lanes each

m2 slot mainboard Computer bus interfaces provided through the connector are PCI Express x4 , Serial ATA , and USB (a single logical port for each of