A total of ten screws hold both halves of the chassis together. Four in the back and six in the underside of the enclosure. Once removed you can easily pull these apart and are left with the red underside and massive black top cover.
There are only two aspects within this top section, which are of interest. First off, there is the afore mentioned fan, which is made by STSTORE - a Korean firm. The other one is the PCB which holds the power button and LEDs. It is connected to a single cable with multiple pins. This should make it easy to connect to the mini-ITX mainboard, as long as the pins line up of course.
On the tray you will find a single metal cover protecting the expansion slot, along with the cage for the drives. This part can hold the slimline drive up top and a single hard drive - may it be 3.5 or 2.5 inches in size on the underside. You will also find a compact converter PCB for the power supply in this area, which is directly hooked up to a plug in the rear of the chassis. I still do not get why Viako ships the unit with a Molex connector. All modern drives - including slimline ones - utilize SATA power and the individual strands on the converter PCB may easily be exchanged. This means that it should be an easy task for Viako to equip the unit with the proper cables in the first place.