Well, you already found the screws. Now pull out the orange tool and push in the underlying surface as there is a snap-hook to release. While pushing it in, pull apart the housing. Just until it's about a thumb apart. Don't pull it apart all the way as you may snap the hinges on the upper side of the device. With a little more than a thumb wide open at the lower end, push the backside in direction where the cooling unit normally is. To the top I'd say. The upper end is hung in from the top.