Installing the M.2 PCIe SSD 
1  Insert the M.2 PCIe SSD to the connector.
2  Press the blue tab to secure the M.2 PCIe SSD.
3  Install the:
a Optical drive
b 2.5–inch drive assembly
c bezel
d cover
4  Follow the procedure in After working inside your computer.
Heat sink assembly
Removing heat sink assembly
1  Follow the procedure in Before working inside your computer.
2  Remove the:
a cover
b bezel
c 2.5–inch drive assembly
d optical drive
Removing and installing components
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