1. This is a mini keyboard with custom functions, Type-C to USB interface, no driver required, plug and play. 2. All key functions can be set on the standard Windows keyboard, and complex shortcut keys can be realized with one key. The keyboard has its storage function. 3. After setting on Windows system, it can be used on systems that support usb protocol such as Linux and MacOS. 4. Simple operation, easy to carry when connecting multiple keyboards. 5. The knob can be set to zoom in and out, switch the previous song, the next song, volume up, volume down, pause, play and other functions, which is a good helper for assistance. Product name: small keyboard Function: Customize shortcut key settings Number of keys: 12 (keys) + 2 knobs Current and voltage: DC 5V/1A Interface: type-c Key technology: mechanical shaft Support system: for Windows/VISTA/Linux (desktop/laptop) Product size: 130x75x37MM Material:ABS colour:White Package Contents: 1 * mini keyboard 1 * USB cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. 1. This is a mini keyboard with custom functions, Type-C to USB interface, no driver required, plug and play. 2. All key functions can be set on the standard Windows keyboard, and complex shortcut keys can be realized with one key. The keyboard has its storage function. 3. After setting on Windows system, it can be used on systems that support usb protocol such as Linux and MacOS. 4. Simple operation, easy to carry when connecting multiple keyboards. 5. The knob can be set to zoom in and out, switch the previous song, the next song, volume up, volume down, pause, play and other functions, which is a good helper for assistance.