Feature:1. APPLICABLE MODEL: CNC controller expansion panel, suitable for DDCS Expert M350 model, for 3 axes, 4 axes and 5 axes controller, has strong compatibility.2. CLEAR KEY MARKING: The CNC controller panel has icons marking with buttons, which are intuitive and clear to read, and can be repeatedly operated without fading.3. ALUMINUM ALLOY: Using excellent aluminum alloy shell, which is hard and wear resistant, not easy to corrode or deform, and has good heat dissipation.4. FOR CNC DEVICES: For various CNC equipment controller, such as engraving machine, cutting machine and welding machine, etc., providing extended function.5. EASY OPERATION: This CNC controller expansion panel has a compact size and is equipped with connecting wires for easy operation and stable performance.Specification:Item Type: CNC Controller PanelMaterial: Aluminum AlloyNumber of Matching Axes: 3 axes, 4 axes and 5 axesAdapter Controller Model: Suitable for DDCS Expert M350Panel Size: Approx. 270 x 112mm / 10.6 x 4.4in Package List:1 x Expansion Panel1 x CableNote:There is no need to provide external power to the keyboard, the serial port will supply 5V to the keyboard.