1. Support USB-5V voltage input, and can use mobile phone chargers, power banks, computer USB ports, etc. as power sources 2. 3.5 The headphone holder is for audio output and can be used with regular 3.5 headphones or connected to external power amplifier devices 3. Support HDMI signal input and use Mini HDMI stand for HDMI1.4 4. The thickness of the drive board has been controlled to 5MM 5. The potentiometer adopts a wave wheel button, a 3-in-1 function, menu, plus, minus, and composite brightness and volume HDMI and TYPEC, automatic recognition, automatic conversion, and subsequent signal access shall prevail Built in 12 languages Adopting fully SMD components, the production design standard is industrial grade, and the shipping standard is civilian grade. The relevant working temperature needs to be tested by oneself Note:Before purchasing, please confirm that your display interface type is EDP 30Pin, and choose the corresponding resolution to purchase. Type:1920x1080/1366x768 Colour:Blue Material:PC+Metal Package Contents: 1 * Control Board(For 30Pin) 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.