Network Card

Remove all of the 8 screws and the bottom panel should pop off.

After that you are in and now can change most of the components, which we also have tutorials for.

Remove the screw with a Philips J1 driver.

Try to remove the cables by hand or if you really can't, then use a spudger to carefully pry them up.

After removing the screw and the cables, you can safely remove the network card.

After the previous step, you are good to go.