The connectors on the adapter are X16 size, but functionally work as two X8 slots. The overall dimension of the riser board is 2.14″H x 5.07″W. The connector center heights are 1.97″ and 1.17″. All height dimensions are referenced to the bottom of the board. This adapter will work only on motherboards that supports bifurcation in its BIOS.
Overall dimensions: 2.14″ H x 5.07″ W
Gen 4 Release Date: April 15th, 2020 (X8 and X16 only)