My understanding is USB is a "dumb" port compared to FW. USB maybe fast but is does not have the same technical abilities the FW does. For example USB is not capable of allowing a mac to enter target mode.

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- 335i E92 2007 [Sapphire Black/Coral Red]
- X5 E70 2013 [Sparkling Bronze/Cinnamon]
"Living the dream" 1981 Delorean #6489