[PD3.1 Emark Safe Chip and Rgb light] The Usb C to Usb C Cable EMARK3.1 chip not only enables 240W fast charging but also maximizes device safety, ensuring 24-hour constant temperature charging. It automatically stops charging once the device is fully charged, preventing overcharging and battery damage. And Rgb lights on both ports will keep changing colours when charging. It is a soft light, not flashing eyes, full of gaming atmosphere.