I assume you mean connect the YD7001 to the Mac – you cannot connect the YD9401 to anything.
?
If you are wedded to using a Mac then you can use Parallels, or similar solutions to run a Windows VM on the Mac within which you can run the YD7001 software and connect via USB or LAN.
Thanks Iain:? it may be my faint hope clause to learn how to use (and connect) the YD9401 on a Mac.? If not, I'll have to look elsewhere to run my layout.