To access to the interior, simply remove the thumb screws holding each panel in place. We have seen this interior layout in several other cases in the past, so Sharkoon is drawing on a trusted and true mid-level frame here. A metal shroud can hold two 2.5" drive trays which are in turn secured by thumb screws. There is an opening in the front of the shroud, so you may install radiators of up to 360 mm in the front. On the backside are several smaller openings for cable routing, along with the main gap on the side of the motherboard. While there is not too much space behind the tray, there is plenty in front of the chassis.
You will also find an RGB PCB you may connect up to eight 3-pin headers to. Every fan inside the chassis utilizes one, which leaves you with four free headers. Below that are two more placement possibilities for SSDs should you want to take the included trays and hide them. It would have been awesome had Sharkoon included trays for these as well, as it would have resulted in more storage capacity and thus value.
In the front, the bottom can hold three 3.5" drives. Two of these are meant to be placed on plastic trays, which can also be used for 2.5" drives, while the third is to be secured directly to the floor of the chassis with the previously mentioned rubber rings and classic screws. Above that are the three pre-installed 120 mm fans and plenty of additional room for a large radiator.
The PSU bay in the rear comes with four square foam spacers on which the PSU rests, while the seven expansion slots above are pretty traditional, with a sliding bracket to further secure them beyond the classic screws pinning them to the frame. In the very top is that fourth 120 mm LED-ring-equipped fan set to push hot air out the back. As you can see, all of these units look pretty unique—they aren't simply generic.
You may install two 140 or three 120 mm fans in the ceiling, and while radiators of 280 or 360 mm should also fit, the mounting holes are pretty close to the motherboard, so really make sure your components will fit before purchasing them.
All the cables within the Sharkoon TG6 RGB are sleeved black and of the standard variety. The RGB PCB uses a SATA power connector and gives you the choice of chassis control via the reset cable or the ability to connect it to a 3 or 4-pin motherboard header. Lastly, the case headers are well labeled. However, as you may have guessed, the reset cable is not available as such if used for RGB control instead.