A DC cable is a power connector that transfers electrical energy from a source to your device. For a cooling fan jacket, the DC cable is essential to connect the jacket's fan to the power bank. The cable typically has three ports: one A port for the power bank, and two ports for the jacket's fans. DC cables come in different types and lengths, including power cables, power bank cables, and portable device cables. To ensure your fan jacket functions properly and safely, it's important to use a high-quality and reliable DC cable. Poor-quality cables may not deliver the required power, leading to slow fan speeds or even damage to the jacket. When choosing a DC cable, consider factors such as length, gauge, compatibility, and connector type. In summary, a high-quality and reliable DC cable, such as a power cable, power bank cable, or portable device cable, is essential for your cooling fan jacket. Choose a cable with three ports and consider factors such as length and compatibility to ensure optimal performance and prevent damage to your device.