US D521512 S1
FIG. 1 is a front, top perspective view of an input/output device showing our new design.
FIG. 2 is a bottom view thereof.
FIG. 3 is a front elevational view thereof.
FIG. 4 is a rear elevational view thereof.
FIG. 5 is a left side elevational view thereof; and,
FIG. 6 is a right side elevational view thereof.
The indicia and broken lines shown in the figures do not constitute any portion of the claimed invention and are provided for illustrative purposes only.