Cable-D is for connection to Nikon D5, D850, D810/810A, D800/D800E, D500, D4, D3-series, D700, D300-series, D2X, D2XS, D2HS, D200.
Cable-D is for Solmeta Geotagger Pro 2, if you are using other products, Cable-D is not compatible.

One Cable-D.