KENSINGTON K64325 Trackball Mouse, Corded, Optical, Black
Mouse, Corded, Optical, Ergonomic Design Yes, Compatible With PC/MAC(R), USB/PS2 Connector Type, Black, Cable Length 6 ft, Number of Buttons 4, Height 9 3/4 in, Length 9 3/4 in, Width 3 1/2 in, Features Wrist Rest, Includes Software
