An ornamentaldesign for a connector, as shown and described.
FIG. 1 is a front perspective view of a connector showing our new invention;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear view thereof;
FIG. 5 is a top plan view thereof;
FIG. 6 is a bottom plan view thereof;
FIG. 7 is a left side view thereof; and,
FIG. 8 is a right side view thereof.
The broken line shown in the drawings represents unclaimed environment and forms no part of the claimed design. The dash-dot line represents the boundaries of the claimed design.