The ornamental design for a poweradapter with coveredreceptacles, substantially as shown and described.
FIG. 1 is a right front upper perspective view of the power adapter with covered receptacles;
FIG. 2 is a left rear lower perspective view thereof;
FIG. 3 is a right elevation view thereof;
FIG. 4 is a left elevation view thereof;
FIG. 5 is a front elevation view thereof;
FIG. 6 is a rear elevation view thereof;
FIG. 7 is an upper plan view thereof; and,
FIG. 8 is a lower plan view thereof.
The broken lines in the drawings are for the purpose of illustrating portions of the power adapter with covered receptacles that form no part of the claimed design.