Visual display unit
US D576578 S1
The ornamental design for a visual display unit, as shown and described.
FIG. 1 is a perspective view of a visual display unit;
FIG. 2 is a front view thereof;
FIG. 3 is a top view thereof;
FIG. 4 is a left-side view thereof;
FIG. 5 is a right-side view thereof;
FIG. 6 is a bottom view thereof; and,
FIG. 7 is a rear view thereof.
The broken lines depict environmental subject matter only and form no part of the claimed design.