Unplug all cables from the Apple TV before disassembly and flip the device over.

Using the widest plastic opening tool, force its sharp end into the seam between the Apple TV's bottom plate and its outer casing. Starting on the side with the ports, insert the tool so its tip is angled upward when leverage is applied.

Pry the bottom plate away from the case, starting with the edge closest to the bottom of the apple. Work your way around the plate until all clips are disconnected.

With the plastic clips free, lift the bottom plate.

The bottom plate is held in place by plastic clips that correspond to indentations on the bottom plate. These indentations break easily, as evidenced by the third photo (breakage will not prevent the plate from going back on). To avoid breakage, apply force at the location of these clips, starting from the middle.