Sony VAIO® Optical Mobile Mouse

Model # PCGA-UMS3  |   change model...
This model is also known as:
PCGAUMS3, PCGAUMS3/B, PCGAUMS3/L, PCGAUMS3/S, PCGAUMS3/V, PCGAUMS3B, PCGAUMS3L, PCGAUMS3S, PCGAUMS3V,

Serial Number Location: On the bottom of the mouse.