The iCUE LINK Connector Set contains five active and five passive connectors. These can be used to connect fans or other devices to your iCUE system. The number of fans you can connect to a set depends on the type of fans and the configuration. Active connectors can usually supply more power and are suitable for fans that require a direct power supply, while passive connectors are more likely to be used for sensors or lighting. Therefore, you can theoretically connect up to five fans with one set if you only use active connectors.