were is your 15 year empirical evidence first...
ha ha ha ... this is all about getting a compatible motherboard...in the first place .
so you don't have those problems like your interface can't be Seen/won't connect /. one of the fix's for that is to bring your MB back to factory default. now why is that...
Looking at your pass posting albee1952 i must say it's hard to be leave this.I have never had an issue using a separate firewire card .OK
As a engineer I will say it's just advice you can use it or not..it has always been up to you...