The file of this patent contains at least one drawing executed in color. Copies of this patent with color drawings will be provided by the Office upon request and payment of the necessary fee.

FIG. 1 is a top front perspective view of a display panel with a user interface showing our 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; and,

FIG. 7 is a bottom plan view.

The broken line showing of a display panel and speaker is included for the purpose of illustrating the user interface displayed on a display panel and forms no part of the claimed design.

The rectangular window disposed at the upper right corner of the user interface above the elongate progress indicator is for the purpose of illustrating a pictorial or other representation corresponding to a user selection.