No one can imagine any water-related electronics. But the USB logo has a subtle connection with water. It is modeled after the trident of Poseidon and other waters. Just as the Trident symbolizes power, USB portrays itself as a technical force. The center arrow indicates serial data, the circle indicates the voltage at which the USB operates (5V), and the square indicates the ground voltage.
WeChat scan and reward
Alipay sweeps and rewards
