Thank you Zam, My project is to build a 32 channels console with 10 automated buttons for each channels and with motorized fader for each. but that is 320 input and output, but with 1 card I can have only 256 input and output. So I need use a matrix or more card. The automation will be controlled by Daw like cubase. In addition to that I would like to include the subgroups mute and control (play, rec, stop, etc ...). So if i can use use several core, it's ok for my project.