i am completely happy with how well this thing works on my 2011 mba 13. Even at such a high resolution, it has no problems with choppiness or anything. I also have my time machine external HDD plugged into the display via USB, ethernet also plugged into the display going to my power line ethernet in my house. I also had another external seagate go flex drive connected to the usb ports on the display (although the drive is usb 3 compatible, it was only working at usb 2 speeds, and they seemed excessively slow through the display ) I did a disk speed test on the seagate drive using USB and got about 15mb/s sometimes a little higher, sometimes lower. I went to best buy and got the go flex firewire 800 cable for 20 bucks... the difference is incredible! I now have the external seagate 1tb go flex drive connected via firewire into the TB display and I am getting read speeds of over 70mb/s. I moved my entire iTunes library to the 1tb drive to free up a bunch of space on my internal SSD. HAVE A QUESTION on a related note! after moving my iTunes library and telling iTunes where the new library was, consolidating, and everything else...itunes works good, reading all of my media from the external drive now. but when i deleted all of the iTunes media from my internal SSD to free up a bunch of space, i didn't see ANY free space become available. I moved them to the trash and also made sure to empty the trash as well. The media is over 45 gigs of data, so I was expecting to see 45g added to my free space.. For some reason istat isn't showing any additional free space..i even tried rebooting and restarting istat. WHERE iS MY FREE SPACE?!