To get out from the dust produced I recommend you this one: http://5md.at/l/77caf90 you can find it easely on Amazon too.
I dont know anything about APU2 but what a melancony thinking to this usb to sata2 throughoutput! My old minipcs come with a nice external sata socket enough for one disk.. I could be in the need of usb3 stick to sata2 "plate" eventually.. :D However thanks for your DIY post, appreciated..
