Alltronix AX AMO083P17 3-Button PS/2 Optical Scroll Mouse (White) Alltronix AMO083P17 3-Button PS/2 Optical Scroll Mouse General Features: White and Silver color matches most standard desktop, monitor, keyboard color schemes PS/2 interface 48-inch cable length (approximate) Optical technology Scroll Wheel (acts as third button) High Resolution up to 800 dpi Comfortable ergonomic design No mouse ball to clean