The inside of the Two Hundred is pretty simple. In the center you have your motherboard tray with CPU cooler cutout and six preinstalled standoffs.
Towards the front of the case you have the drive bays, all of which face towards the front/rear of the case. There are a total of six 3.5” internal bays, one internal 3.5” bay, and the three external 5.25” drive bays. None of which have any tool-free installation devices. However the one external 3.5” bay has is hot swappable.
The rear of the case houses the power supply slot on the bottom, which also includes three raised metal brackets to hold it into position. Above the PSU slot are the seven expansion slots of which can only be removed once, then you’ll either have to find another cover or leave the slot empty if you were to move anything on your motherboard.
Above that are the two included fans and motherboard I/O slot. A 120mm fan sits on the rear of the case while a 140mm fan is on the top of the case; both being able to be controlled by the panel on the back of the case. The case also comes with manual, some cable wraps and the necessary hardware for installation.