We will start by removing the back cover, prying with an opening tool to release the notches that hold it.

Remove the fourteen Phillips screws (PH # 00) that hold the intermediate housing. Then, as with the back cover, we will leverage to release it.

We will take care not to lose the plastic piece of uncertain function that will probably fall when we separate the intermediate casing.

Now we disconnect the components of the motherboard to be able to disengage it.

Now all that's left is to disengage the headset from the chassis.