3-button wired custom keyboard, supports USB wired connection with 5V power supply. Features 3 programmable buttons and a rotary encoder. Includes key mapping software for customizing button functions. Offers 3 scene modes: media control, software shortcuts, and code copy, with different key assignments per mode. Equipped with a 0.96-inch LCD display to show current button functions in each scene. RGB lighting effect with on/off toggle switch. Supports standard keys, multimedia keys, and mouse button functions. Hot-swap button design for easy customization. Instructions: Buttons are designed for single press operation only; simultaneous pressing is not supported. Rotary encoder supports left turn, right turn, and press actions. Toggle switch controls RGB lighting. Each button can be assigned a custom function. Scene switching: Press and hold all three buttons for 3 seconds, then release to enter scene mode. Indicator lights will change from off to one light illuminated. Light 1 indicates Scene 1, Light 2 indicates Scene 2. Rotate the encoder to cycle through Scenes 1, 2, and 3. Assign different functions per scene. After selection, press and hold all three buttons for 3 seconds or unplug and re-plug the USB cable to exit scene setup. Color: Black Material: Acrylic + Aluminum Alloy Package Contents: 1 x 3-key wired custom keyboard 1 x Type-C cable Note: The package includes only the items listed. Display lighting and screen differences may cause slight color variations between image and actual product. Measurement error allowed within +/- 1-3 cm.