The Workrite Ergonomics 2144-17 Advantage-Single Adjustable Keyboard System is a model UB-2110RL-25 platform with pinnacle 2 value arm. The platform is ultra-thin and includes the optimizer with built-in document holder and integrated cord management. It has a single swivel-out mouse platform, which stores under the keyboard when not in use. The mouse platform features a mouse trap to keep mouse in place and it will slide to adjust to mouse-forward position for improved comfort. The platform only comes in black and has a removable leatheRite™ palm support. The 2144-17 arm provides maximum knee clearance with the ability to tilt -15° to 10° and a height range from flush to 6" below the worksurface. It's on a nylon glide track with a 360° swivel-easy positioning and storage.