The Complete Handbook of Keyboard Trays & Platforms

Chapter 1: Understanding Keyboard Trays & Platforms

Opening the drawer under your desk to reveal a keyboard tray might seem like a simple moment, but it is the culmination of decades of mechanical engineering, ergonomic research, and office furniture standardization. Those few inches of vertical and horizontal travel represent a design solution to a problem that has existed since the typewriter was integrated into a desk surface: how to keep the operator's wrists and shoulders in a safe posture while working at a height that is also appropriate for reading and writing. To understand what a keyboard tray and platform actually is, you need to look past the surface of a sliding board and understand its role as a positioning device, a piece of safety equipment, and a structural component of the modern workspace.

At its most basic, a keyboard platform is a horizontal surface attached to a desk via an articulating or telescoping mechanism. But that definition obscures the crucial engineering that differentiates a $40 consumer model from a $400 commercial-grade system. The tray is not simply a board that hovers in front of you; it is a mechanism designed to adjust height, tilt, and angle on multiple axes to put the keyboard, mouse, or other input device in a location that reduces musculoskeletal strain on the upper body. The primary function is zeroing out the natural radius and ulnar deviation of the wrist that occurs when you raise your hands to a standard work surface. When you place