3-button wired custom keyboard, only supports wired USB mode, USB wired connection, 5V power supply. It has 3 buttons and a rotary encoder. With the key value editing software, the key code of each button can be . It has 3 scene modes of media control, software shortcut keys and code copy, and different key values can be used in different scene modes. The 0.96-inch LCD can display the functions of the 3 buttons in the current scene. RGB lighting effect, LCD display, support for ordinary buttons, multimedia buttons and mouse button functions. Hot-swap buttons. Instructions: The 3 buttons are , and can only be pressed one at a time, and cannot be pressed in combination. The rotary encoder can be turned left, right, and pressed. The toggle switch is used to turn the RGB light on/off. Each key can have a custom key value. Scene switching function: the three buttons at the same time for 3 seconds, and then release them to enter the scene switching mode. The lights go from off at the same time to only one light on. If light 1 is on, it means that it is in scene 1 at this time, and if light 2 is on, it means that it is in scene 2 at this time. Rotate the knob to select scenes 1, 2, and 3. In different scenes, each button can have a different key value. After the selection is completed, the 3 buttons for 3 seconds or reinsert the USB cable to restart to exit the scene setting mode. Colour:Black & Transparent Material:Acrylic + Aluminum Alloy Package Contents: 1 * 3-key Wired custom keyboard 1 * Type-C cable Only the above package content, other products are not included. Note: Light reflection 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.