Start by taking out the 4 obvious screws, two on each side.

You'll need a long-necked T6 driver if you want to get these out cleanly. (At least 1" / 25mm.)

The pro tech toolkit does not have one long enough, so I used a slightly hacked hex key on two of them (stripping the heads) and ended up drilling out the other two because the hex key is not a good fit.