23e2d45c_isualizer_User_Guide___GeForce__Animation_Style
[Description] First the SLI Bridge LED brightness goes from minimum to maximum, after which all the GPU LEDs go from minimum to maximum brightness. This gives the impression of light flowing from out (SLI) to in (GPU). [SLI LED Required] X [“All LEDs” Required] X [Animation Style] 
Flow In
GeForce Experience GeForce GTX LED Visualizer User Guide | GeForce
Animation Style