The ornamental design for a connector, as shown and described.
FIG. 1 is a perspective view of a connector showing my new design;
FIG. 2 is a front view thereof;
FIG. 3 is a right side view thereof, the left side view being a mirror image thereof;
FIG. 4 is a back view thereof;
FIG. 5 is a top view thereof;
FIG. 6 is a bottom view thereof;
FIG. 7 is a top perspective exploded view thereof; and,
FIG. 8 is a bottom perspective exploded view thereof.
The broken lines shown represent unclaimed subject matter only and form no part of the claim. Where broken lines abut a claimed surface it is understood that those broken lines represent an unclaimed boundary between claimed and unclaimed surfaces. None of the broken lines form any part of the claimed design.