Hi all, I recently bought a MBA (2014, i5, 4gb) comming from a 2010 Macbook Pro which had both USB's in left side. Well, I've used the old MBP to mix & do live sets (appart from other stuff), and never had problems with the setup (powered soundcard in one USB, powered HUB in the other USB with various midi controllers), despite switching the ports. The thing is that with the Air, same setup but soundcard on the right USB and HUB on the left, I've haven't had problems (I can't 100% confirm it because I've only used it for one week) till today that I switched both sides. I've did a lil research and appart from a possible (but not much probable) HUB problem, I've read that the left USB port of the new i5-i7 MBP's and MBA's has more bandwith than the right one because of some internal components attatched to it. So, appart from more tests that I'll do for sure, could anyone confirm me if that's true, so I have to take care of choosing the USB port? Some stuff about this on this link: http://www.hardmac.com/news/2010/06/22/macbook-pro-core-ix-usb-ports-are-not-equals P.S: by "problems" I mean HUGE (various seconds) latency issues on the midi controllers attatched in the USB HUB. Never had those problems before.