3-button wired custom keyboard with USB wired connection and 5V power supply. Features three programmable buttons and a rotary encoder. Compatible with key mapping software to customize key functions. Offers three scene modes: media control, software shortcuts, and code copy, each supporting different button configurations. Equipped with a 0.96-inch LCD display that shows the current function of each button based on the active scene. Includes RGB lighting effects and supports standard keys, multimedia controls, and mouse functions. Supports hot-swap button replacement. Operation instructions: The three buttons are designed for single press operation only and do not support simultaneous or combination presses. The rotary encoder allows left and right rotation plus press functionality. A toggle switch controls RGB lighting on/off. Each key can be assigned a custom function. Scene switching: Press and hold all three buttons for 3 seconds, then release to enter scene selection mode. Lights will cycle from off to one illuminated indicator. When light 1 is on, the device is in scene 1; when light 2 is on, it is in scene 2. Rotate the encoder to select between scenes 1, 2, and 3. Assign different key functions per scene. After configuration, press and hold all three buttons for 3 seconds or unplug and reinsert the USB cable to exit setup mode. Color: Black Material: Acrylic + Aluminum Alloy Package Contents: 1 x 3-key wired custom keyboard 1 x Type-C cable Note: Lighting and screen differences may cause slight color variation between the product image and actual item. Measurement tolerance: ±1–3 cm.