Part came after about 3 weeks of China ... solder joints, connectors and circuit board - good impression, nothing to complain +++ Crucial mSATA 256GB pure and rear 'reingeklippt' 100%. After play my 'C' partition and 'hide' the old 'C' on the 1TB drive in my Acer LapTop installed - then start without further problems. For the two rear holes no screws were at, would not fit because the 2 receiving locations are further away in my Acer. At the original drive is a metal plate and the angle between 2 fastening points at Acer. Acer stands with me on the table, is not 'moved', still planning a solution ...