iOne 3 Large Button USB PS/2 Trackball Mouse (Black)

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iOne 3 Large Button USB PS/2 Trackball Mouse (Black)

ione USB Libra-90 3-Large Button Trackball Mouse General Features Black color
USB or PS2 interface USB adapter attached to PS2 3-Large Buttons
Large Advanced Trackball for Scrolling and Pointing Streamlined Styling and Ergonomic design
Detachable Wrist Rest Pad Removable Retaining Ring for easy ball removal and roller cleaning
Tactile micro switches