This is a Divisional Application of U.S. Design Application having Ser. No. 29/708,370 filed on Oct. 4, 2019 (now U.S. Pat. No. D888,543).
FIG. 1 is an illustration of a front perspective view of an adaptor for supporting an electronic device;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a right-side elevational view thereof;
FIG. 5 is a left-side elevational view thereof;
FIG. 6 is a top view thereof; and,
FIG. 7 is a bottom view thereof.
The broken lines shown as dashed lines are for the purpose of illustrating unclaimed structure, and form no part of the claimed design.