Introduction
This guide will show the replacement of the solid state drive (SSD) of the Samsung ATIV Book 9 NP900X3K-S01US.
Tools
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            Unscrew the five Phillips #00 screws which connect the battery to the frame of the laptop. 
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            Lift the battery from the bottom edge, taking care as it is disconnected from the motherboard. 
 
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            Remove the interconnect ribbon cable labeled “main” and “sub” by prying the pin connections up with a spudger or plastic opening tool. 
 
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            Remove the single screw holding down the SSD with a Phillips #00 screwdriver. 
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            Remove the SSD from its slot located to the right, just above the battery. 
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.