Connect a 3-pin ARGB device to a 4-pin ARGB port.
Connect a 3-pin ARGB device to a 4-pin ARGB port.
You can modify your motherboard by adding a small RGB controller or using a compatible adapter to convert the 12V 4-pin ARGB signal into a 4V 3-pin ARGB output for the Lian Li SL Infinity 120 fan.
It's not possible to use ARGB 3pin because it works with analog RGB, requiring 12V for Red, Green, Blue and Ground on a 4-pin setup. A three-pin version handles digital RGB at 5V, with separate data and ground connections.