Cooler Master Stacker CM 830 - Full Tower Aluminum Case

Interior of the CM Stacker 830:

To remove the side panels there are two levers on the back clearly labeled "lock / unlock", once unlocked the side panels simply slide back then out. Also in the same general area on the rear is where the PSU is mounted. Four screws hold a bracket in place which the PSU mounts to, it is worth noting that the PSU can be mounted in either direction.

Inside the case reveals a large plastic panel which can hold four (4) fans ranging from 140mm to 60mm, or a cross-flow fan in combination with two regular fans.

The motherboard try slides out quite easily, all that is needed is to slide a couple retention clips to "unlock" and it slides right out. The rear panel can be converted from ATX to BTX by switching the fan / IO shield side with the PCI brackets' side (the manual illustrates how to do this). Inside the case it is almost a mirror image for the MB tray slides & holes to swap the plastic panel that holds the 4 fans. Additional instructions are included on how to mount the air duct and SRM. Once a motherboard is mounted, as you can see it is very spacious inside and would provide plenty of room for a water cooling setup.

Inside the drive bay area, Cooler Master includes one 4-in-3 device module. It's called a "4-in-3" because four (4) hard drives will fit in the module which only takes up three (3) drive bay slots. A 120mm fan is mounted to the front of the module to keep the hard drives nice and cool.

All the drive bays feature a tool-less design, simply slide the drive in the move the plastic bracket to the "lock" position. When locked, little tabs slide into the screw holes of the drive, keeping it held firmly in place. There are slots in the bracket to allow regular screws to still be used, furthermore the brackets can be removed completely to reveal regular mounting holes.