The M31L0D0 is a desktop trackball from the DT225 series designed for ergonomic and ambidextrous cursor control. It features non-contacting optical encoders, a 2.25-inch diameter thermoset phenolic ball, and USB 2.0 protocol connectivity with input specifications of 4.75 V to 5.25 V at 25 mA maximum. The device incorporates a polished stainless steel shaft and encased stainless steel bearings, rated for 5,000,000 180-degree rotations with 6 ounces of vertical force, and operates reliably across a temperature range of -25°C to +70°C. This trackball is suitable for applications requiring precise cursor positioning, extended use scenarios, and environments where durability and consistent performance are essential.