Samsung SM-X300 User Manual page 18

Getting started
Removing the protective case
With the device upright, push the edges of the upper part one by one using both hands
until the device protrudes from the case and remove the device from it.
1 2 3
Inserting the S Pen
Insert the S Pen into the top of the protective case.
Do not insert the S Pen backwards into the protective case.
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