The Reader will disappear completely in the slot, he is not above and closes exactly to the housing of the computer, so that it can remain permanently in the device. The inserted SD card is also not over. The speed of data transmission is very high, SDXC cards are properly recognized.
I can wholeheartedly recommend the Transcend card reader, especially for Mac users with a 17 "MacBook Pro, which unfortunately does not yet have a built-in card reader yes.