Anyone crack this nut?

I love the puzzle in removing parts from computer towers but this one has me stumped, Anyone taken one of these apart before? How did you get the board out? Thanks for your expertise.

flat head screwdriver

Yea just a flat head screw driver. Remember its all going as scrap so don't be too careful. Do wear gloves and I suggest eye protection. Mike.

Slide the driver up under the plastic cover and twist, it should be just compression clips holding it all together.

Most of them only require the screwdriver up the center like said above. Some may have a compression clip that needs removed first from the outside. That one you are showing might need that extra step. There are several models, but 90% it is just jam a screwdriver and twist.