Convert a mini pci express card into a standard desktop pci express card the pex2mpex pci express to mini pci express adapter card enables mini pci express cards mini cards to be used in a standard pci express card slot these pcie mini cards which are typically designed for laptops or small form factor itx computers can be used normally inside more conventional desktop computers the adapter card features a complete pcie to mini pcie pass through design that eliminates data transfer rate b