Usb interfaces Jul 13, 2012 19:12:14 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by ross on Jul 13, 2012 19:12:14 GMT -5 So I just got a new MacBook. And the USB3 ports are not compatible with my old audio interface, so I need a new one. i'd like for it to carry up to four channels.Suggestions?