Remove the fifteen black 6.0 mm Phillips #00 screws from the back cover.

Carefully remove the back cover by prying up the case with a plastic opening tool, starting at the opening end and finishing at the hinge.

It may be easiest to start at the Ethernet port and run a fingernail, or something else thin, along the side until the panel pops off.

When putting this cover back on later, it should "click" back into place.