Having just acquired a late 2013 21.5" iMac I thought about any possible advantage in booting off of an external SSD, what I didn't want though was something cumbersome maybe desk mounted that would limit ease of movement as the iMac needs moving around a bit each day to cater for different situations.
After a little bit of searching I came across the Pioneer 3D NAND portable external SSD which is about the same size as a credit card, though thicker and it sits perfectly on the back of the stand mounted on some 'Blue Tack', out of view and totally unaffected by the iMac being moved around.
It boots quicker than the original internal platter HD and makes the iMac quicker in daily use ... all in all a neat little drive.
After a little bit of searching I came across the Pioneer 3D NAND portable external SSD which is about the same size as a credit card, though thicker and it sits perfectly on the back of the stand mounted on some 'Blue Tack', out of view and totally unaffected by the iMac being moved around.
It boots quicker than the original internal platter HD and makes the iMac quicker in daily use ... all in all a neat little drive.