Hi, new here, and found this thread which illustrates the same issue I'm possibly about to be faced with!
I need to upgrade my Mac Pro which is 'stuck' with OS 10.7.x, therefore I can't upgrade Logic to X or Pro Tools to 11 as both need OS 10.9.x (Mavericks), so I'm eyeing up an iMac (27"; Fusion drive etc) as a replacement. Problem is it doesn't have Firewire, and it's looking like the only way I can connect the DM to the Imac is via TB - FW800 - FW400. That sounds like it will cause problems. Anyone out there got any advice/ experience with this issue?