I am looking for a 27" display to connect to my MBA. initially I was looking at the Apple thunderbolt display however some reviews I have turned my attention to the u2711. Questions: 1] Can I get native 2560 x 1440 resolution via a mini display to display cable from the thunderbolt port on the MBA? Or will I need to buy a dual link DVI connector? 2] If I bought a thunderbolt HDD caddy which supports daisy chaining could I plug the display port cable into the secondary daisy chained port on the HDD? 3] Do I need to plug a USB to USB cable into the u2711 to allow the USB ports on the monitor to work from my MBA? or will the display port cable transmit USB with no need for a USB cable? Many thanks.