An update to my earlier post, I just bit the bullet and got the Suunto cable, less likely to have to mess with drivers for aftermarket cables. Those drivers come on CD and I'd have no easy way to upload them on an iMac. No problems uploading dives into Subsurface or DM5. Looks to me that DM5 is still a troublesome app, crashes frequently just by navigating through the uploaded dives. FRUSTRATING!! Subsurface works great...I've been messing around for a few nights entering dive details and manually entering old dives....stable and no problems. IMO to anyone reading this thread, don't even bother with DM5. It's sad that a free program can run so well on multiple platforms and PDC's and Suunto can't even get their proprietary software to work well. I'm more than happy with the Zoop and I'm not ruling out ever buying another Suunto PDC but Suunto your company name is on this!! Please support it!