With the four screws exposed you are now able to remove these with a Philips screwdriver. Store the screws in a safe place. All screws are of a similar type, so it is not necessary to mark their original locations.

After removing the screws you will be able to expose the internal hardware which is carrying the hard drive. Carefully slide out the chassis from either the front or the back. There are no obstructions anywhere, so this part is only affected by your personal preference.

Since the previous steps were performed upside-down to preserve the glue strips, you can now flip the internals back to their original position and gaze at the magnificent hardware.