I recently purchased an iMac 2017, which has Thunderbolt 3. My old 2007 iMac has Firewire, and I used it for my digital camcorder and for an audio interface. I'm almost done converting the videos, so that's not a huge concern. The external audio interface is a PreSonus FireStudio Mobile. It works great and I'd like to keep it (as replacing it would be around $300 or more). The only ports it has are two Firewire ports - no USB, etc. Since it uses Firewire I'd need an adapter. There's an adapter on Amazon but it's for Thunderbolt 2 - apparently not compatible with the new iMac. Is there an adapter for Firewire to a current (2017) iMac (Thunderbolt 3 or USB3)?