Portable Electronic Device

FIG. 1 is a first front perspective view of a portable electronic device; FIG. 2 is a second front perspective view thereof; FIG. 3 is a first back perspective view thereof; FIG. 4 is a second back perspective view thereof; FIG. 5 is a front view thereof; FIG. 6 is a back view thereof; FIG. 7 is a left side view thereof; FIG. 8 is right side view thereof; FIG. 9 is a top view thereof; and, FIG. 10 is a bottom view thereof. The broken lines in the figures depict portions of the portable electronic device that form no part of the claimed design.