Portable electronic device

FIG. 1 is a front perspective view of a portable electronic device in accordance with our new design;

FIG. 2 is another front perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is a rear perspective view thereof; and,

FIG. 10 is another rear perspective view thereof.

The broken lines, which show environmental portions of a portable electronic device, form no part of the claimed design.