Adapter connector

FIG. 1 is a perspective view showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a bottom end view thereof; and,

FIG. 6 is a top end view thereof.

The portions of the adapter connector in broken lines are for illustrative purposes only and form no part of the claimed design.