Should work with any two RS-232 ports on any 2 machines or in my case the same Scrub and play and locate and mc to follow the chase scrub locate and play. The normal behaviour when set up like this is for the daw to In “external” mode for the machine control. Normally this would result in the DAW controlling MC with MC In the DAW, set to com 2 and set up deck control sync. I set say com 1 in “communication (serial) port” settings. Joining the two RS-232’s together on a win 10 machine. The current set up is a USB – 2x RS-232 with a x-over cable