FIG. 1 is a top, right, front, isometric view of a universal serial bus hub;
FIG. 2 is a left side elevational view thereof;
FIG. 3 is a right side elevational view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof;
FIG. 6 is a front elevational view thereof; and,
FIG. 7 is a rear elevational view thereof.
The broken lines in the drawings are for illustrative purposes only and form no part of the claimed design.