Features: You can customize the button to achieve keyboard function, mouse function, multimedia function, character string function, game function and macro definition function. Designed with mechanical blue switches, strong paragraph sense, crisp sound. The button curve fits ergonomic design, comfortable to type. With anti-slip pads at the bottom, no need to worry about keyboard slipping. USB wired connection, the detachable Type-C cable supports positive and negative plug and unplug, easy to carry, plug and play. This product provides key definition setting software based on Windows system, which can be used in various systems after setting.(Note: If you use Linux or Mac, you need to set it up on Windows first, then plug the foot switch into your device and run it to use) Wide application, suitable for office, game, multimedia, etc. Specification: Type: Wired mini keyboard Model: MK321U Color: Black/White(optional) Key number: 3 Interface type: Type-C Mechanical switch: Blue switch Service life: 50 million times Working voltage/current: 5V@15mA Item size: 7.5 * 3.7 * 2.8cm /2.95 * 1.46 * 1.1in Item weight: Approx. 29g /1.02oz Packing list: 1 * Keyboard 1 * Data cable 1 * User manual