My interest was simply getting the drive out so I could use it connected as a native SATA drive. Expect to wreck the case if this is your goal. As proposed above, remove the flat size. Metal prying tools in my iFixit kit were better for this, the overall strength of this assemble case bested the plastic “pry” tools. Once I had the assembly open, the back (power) end of the system went next; average sized pliers cracked the back and I could pry it and one side away. Eventually you will have a metal chassis in hand. remove the four side screws, and the drive pops off the power/data ports quite easily. If you want to preserve the case disassembly is NOT advised. It appears it was made to snap together and break upon disassembly. Total “destructive” disassembly took about 20 minutes.