Dimension: The diameter of the fan in millimeters (mm). The larger the fan, the more efficient the cooling and the quieter the operation compared to a smaller one.
3-Pin: Connector for connecting the fan to the motherboard. An adapter to 4-Pin Molex is required for connection to the power supply cable.
4-Pin Molex: Plug for connecting the fan to the power supply cable.
4-Pin PWM: It offers additional control over the fan speed compared to the 3-Pin. It can be connected to a 3-Pin socket, but will always operate at maximum speed.
6-Pin: Plug for connecting a fan with RGB lighting to a fan controller, which allows for adjusting the color shade.