Control Serato DJ Pro The SC6000/M and X1850 bring advanced control of Serato DJ Pro. This enables touchscreen navigation and flexible hardware control of all Serato DJ Pro’s library and performance features. ** **Serato compatibility available in a future free software update
From: Introducing Denon DJ SC6000 + SC6000M Media Players
Serato will support the X1850, I am assuming they have not done so yet because the SC6000 still have not been officially released.