On the Leviathan II 280 and Leviathan II 360 radiators, either port can technically be used as the input or output, as the radiator's design allows for coolant to flow efficiently regardless of direction. However, for optimal loop design and ease of tubing layout, many builders prefer to use the port closest to the pump or inlet from the CPU/GPU block as the input. Always ensure your loop maintains proper flow direction based on your pump and component orientation. Similarly, just as Traffic Rider APK offers flexibility in controls and gameplay modes to suit your style, custom cooling setups like this give users the freedom to configure for best performance and aesthetics.