The ornamental design for a portableelectronicdevicestand, as shown and described.
FIG. 1 is a perspective view of a portable electronic device stand, showing my new design in an unfolded configuration ready for use;
FIG. 2 is a perspective view thereof, illustrated in a folded configuration;
FIG. 3 is a left-side elevational view of FIG. 2, the right-side elevational view being a mirror image thereof;
FIG. 4 is a rear elevational view of FIG. 2;
FIG. 5 is a front elevational view of FIG. 2;
FIG. 6 is a top plan view of FIG. 2;
FIG. 7 is a bottom plan view of FIG. 2;
FIG. 8 is a perspective view of FIG. 1, illustrated in-use with a portable electronic device; and,
FIG. 9 is a perspective view of FIG. 2, illustrated as stored in the folded configuration in a wallet.
The broken lines showing a portable electronic device in FIG. 8 and a wallet in FIG. 9 depict environmental matter and form no part of the claimed design.