This is the display connector in the new 11″ MacBook Air. To remove the display clamshell this must be unplugged. Upon re-installation it is very important to note that the machine will not boot with connector installed upside down. There are no clear identifying markings on the connector to indication its orientation. If installed incorrectly the machine will start briefly, fans will spin momentarily, and the computer will return to an off state. I recommend a sharpie dot on the top side of the connector before you remove it, as to reinstall the battery and bottom case as necessary to test it per Apple protocol is quite time consuming. Do yourself a favor and mark it!