FIG. 1 is a reduced top front right side perspective view of a keyboard housing showing our new design, the keys being shown in broken lines for illustrative purposes only and form no part of the claimed design;

FIG. 2 is a right side elevational view thereof, the left side elevational being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof; and,

FIG. 5 is a rear elevational view thereof.