2166560109 from Molex is a ChargeStack Board-to-Board Receptacle, 0.40mm Pitch, 0.70mm Height, 6 Signal Pin + 4 Power Pin + 2 Fitting Nail, 15A Battery B-to-B, 8 Reels/Carton. 6 signal terminals. 4 power terminals
The 2166570109 from Molex is a 10-position plug connector with outer shroud contacts for surface mounting and gold plating, specified as 0.4 (BT, H07, EMB PKG).