Asus GL552J E-Manual page 88

G. Place the new HDD with its PCB (printed circuit board) facing the
HDD bay. Ensure that the port connectors of your HDD are not
obstructed by any part of the HDD bay.
H. Reattach and secure the HDD with the screws you removed
earlier.
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new HDD
HDD bay
Notebook PC E-Manual