ASUS Marshmallow Mouse MD100 ASUS Marshmallow Mouse MD100 features for its quick-switch magnetic covers and a concealed carrying strap that makes it easy to carry around. For safety and better hygiene, the covers include ASUS Antibacterial Guard treatment to inhibit the growth of harmful bacteria. It also offers easily adjustable DPI levels for varying degrees of precision, plus 100% PTFE mouse feet for a smooth glide on any flat surface.