Kensington Slimblade Trackball [72327]

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

A USB trackball equipped with a laser sensor and four buttons.
In addition to moving the cursor as a normal trackball, you can scroll up and down by turning the ball sideways.
You can also switch operation modes and assign functions to each button using the utility software distributed on the manufacturer's website.