MarkoBog :
What are the differences between mini pci-e and pci-e x1?
Can I put a pci-e x1 card into mini pci-e?
Which slot is faster mini pci-e or pci-e x1?
x1 mini PCIe is most of the time Gen 2.0 .. (500MB/s)
While x1 PCIe slot is Gen 3.0 on modern motherboards (1000MB/s)
so the normal slot if Gen 3.0 will be faster double the bandwidth.
but it is not a big deal for mini PCI-e is mostly used for wifi cards ... and 500MB/s is enough for most WIFI cards
However, if you want high end Wifi card (more than 500MB/s) , they need to use x1 PCIe 3.0 slot .