Cover of an electronic device with surface pattern

FIG. 1 is a perspective view of a cover of an electronic device with surface pattern showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view thereof; and,

FIG. 4 is an enlarged view thereof, of circled portion 4 in FIG. 2 .

In FIGS. 1-3 , the evenly segmented broken lines indicate portions of the cover of an electronic device with surface pattern that form no part of the claimed design. In FIGS. 2 and 4 , the alternating long-dash short-dash type broken lines represent the boundary of the portion of the cover of an electronic device with surface pattern that is shown on an enlarged scale in FIG. 4 . The broken lines form no part of the claimed design.