Introduction:The Kensington Expert Mouse Pro (Model 64213) is a premium wired trackball that delivers precise cursor control using a large, smooth-rolling ball. It supports both USB and PS/2 connections and was designed for seamless compatibility with Windows 95/98/NT/ME systems as well as Macs. It includes an integrated scroll wheel for easy document/web navigation, four main programmable buttons, and six DirectLaunch buttons for instant access to favorite applications or websites.

Features:

• Brand New / Old Stock - Never used, in original packaging. A true collector's item from the classic Kensington lineup.
• Precision & Comfort - Large trackball offers superior accuracy and control with minimal desk space. Great for reducing wrist/hand fatigue during long computing sessions.
• Highly Customizable - Programmable buttons let you tailor it to your workflow (back/forward, app launching, macros, etc.).
• Versatile Connectivity - Works on modern and vintage systems via USB/PS/2.
• Built to Last - Renowned Kensington durability; many users report these lasting decades.
• Retro Appeal - Perfect for Windows 95/98/NT/ME retro builds, Mac enthusiasts, graphic designers, engineers, or anyone who prefers trackballs over mice.
• Space-Saving & Ergonomic - Ideal for small workspaces or users seeking an alternative to traditional mice.