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Professional reviewers and ergonomists agree that finger-operated trackballs are superior to thumb-based trackballs when it comes to precision and hand comfort. At the same time, professional users prefer the convenience of wireless controllers. Kensington has responded with its most advanced trackball yet - the SlimBlade™ Pro Trackball. Now you can enjoy the precision and ease of a finger-operated trackball that includes Bluetooth, 2.4GHz wireless and wired capabilities, together with unique dual-sensor ball-twist scrolling. All in a sleek design that saves valuable desk space and can be used with either hand. It’s the ultimate in accuracy, comfort and control.Wired + Wireless Triple Connection CapabilityChoose between Bluetooth, 2.4GHz wireless and wired connection options for maximum flexibility.Rechargeable BatteryProvides 4 months of battery life with single charge via USB port.Precision Movement with Twist ScrollingLarge 55mm trackball lets you scroll up and down web pages and documents with quick precision via a simple twist.Ambidextrous Design with Sleek, Low-Profile FootprintLow-profile shape allows all-day comfort for both right-handed and left-handed users. The trackball takes up less desk space than what is needed to operate a mouse and is more comfortable during extended use since it requires less arm and wrist movement.Superior Optical Tracking TechnologyDual sensors accurately track the large 55mm ball, giving you precise cursor control that requires less hand and wrist movement. Provides highly accurate and responsive cursor tracking and scrolling.Plug & Play Installation and Flexible Control CustomisationSimply plug in the USB cable to the trackball and you will be up and running quickly. Free downloadable KensingtonWorks™ software provides an easy-to-configure personalised experience, letting you assign a wide variety of program functions to 8 sets of programmable buttons with KensingtonWorks™ installed. (Features 4 individual buttons + 4 sets of combo buttons.) *Windows ARM-based computers are currently not supported. Please check back for future updates on compatibility.128-bit AES EncryptionGovernment-grade 128-bit AES encryption for enhanced security to deter hackers from monitoring wireless connection and capturing sensitive informationWindows and macOS CompatibleSupports Windows 7 or later [32-bit/64-bit*], macOS 10.13 or later. ***Windows 11, 64-bit onlySmartFit™ - Comfort made easyThis product is designed to comfortably fit users with average to larger sized hands.

The Pro Fit® Ergo TB550 Trackball combines the feel of a wireless mouse with the convenience and accuracy of an advanced trackball. A sculpted ergonomic design with 45° tilt helps improve wrist and forearm alignment. The TB550 takes up less desk space than a conventional mouse and is more comfortable during extended use. Users can choose Bluetooth® Low Energy (LE) and 2.4GHz wireless connection options for maximum flexibility. The TB550 offers seven programmable buttons and adds an enhanced 4D scroll wheel that provides intuitive four-direction scrolling. It also features long-life rechargeable battery, made of 51% recycled plastic, and patented ball ejection system for easy cleaning.Ergonomic DesignA sculpted design provides all-day comfort. The Pro Fit® Ergo TB550 features a unique 45° tilt that helps improve wrist and forearm alignment, and an enhanced 4D scroll wheel for an intuitive user experience.Dual Wireless (Bluetooth® Low Energy (LE) + 2.4GHz) Connection CapabilityThe Pro Fit® Ergo TB550 includes a choice of Bluetooth® Low Energy (LE) and 2.4GHz wireless connection (2.4GHz nano receiver included).Rechargeable BatteryThe Pro Fit® Ergo TB550 provides up to 4 months of battery life with a single charge via USB-C® port.Made With 70% Post-Consumer Recycled ABS51% of overall plastic is recycled plastic.Patented Cleaning SystemThe Pro Fit® Ergo TB550’s unique, easy-to-clean design features a built-in trackball ejection button to effortlessly remove the trackball for cleaning when needed.High-Quality Optical TrackingAn optical sensor accurately tracks the 34mm thumb-operated trackball, giving users smooth cursor control and optimal precision. The trackball features 4 switchable cursor speeds (400, 800, 1200, and 1600 DPI).Plug & Play InstallationUsers will be up and running quickly thanks to Plug & Play Installation for simple setup. The trackball features 7 programmable buttons that can be personalized with free KensingtonWorks™ software to enhance productivity.128-bit AES EncryptionThe Pro Fit® Ergo TB550 includes government-grade 128-bit AES encryption for enhanced security to deter hackers from monitoring wireless connection and capturing sensitive information.