The product came with only the three fans, which can be connected in series or individually on a suitable board and controlled by it. (very bright light)

In my case, it's an ASUS ROG Strix X570-F Gaming and with the AMOURY CREATE software, the fans can be controlled individually and therefore assigned different lighting effects. They also synchronise perfectly with the other products!

no it is not they can be connected to each other

I have an Asus motherboard with a 3 pin RGB (neon) header and 4 pin PVM (power and speed).You don't need a hub if these connectors are present.