I claim the ornamental design for a portion of a signal connector, as shown and described.
FIG. 1 is a front, top and right side perspective view of a portion of a signal connector showing my new design.
FIG. 2 is a front elevational view thereof.
FIG. 3 is a rear elevational view thereof.
FIG. 4 is a left side elevational view thereof.
FIG. 5 is a right side elevational view thereof.
FIG. 6 is a top plan view thereof.
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a front, bottom and right side perspective view thereof.
In each of the figures, portions or features that are shown in broken lines are provided as illustrative exemplary structures, and are not to be considered as limitations of the claimed subject matter.