The side panels are fastened to the chassis using thumbscrews, which is great. Even though you can remove the right panel, the motherboard tray is permanently attached to the chassis. One good thing about this case is that the fan that is attached to the left panel uses a very convenient power plug (called “wireless” by Thermaltake) that is permanently attached to the lower section of the case. While in other cases you need to detach the fan power plug from the power supply when you remove the left panel, this is not necessary on Spedo Advance Package. The plug used does this automatically for you. In Figure 8 you have an overall look from the interior of this case.

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Figure 8: Inside Spedo Advance Package.
The first thing that catches the eye is the plastic divisions located on the lower section of the case, called “Advanced Thermal Chamber” or simply “ATC” by Thermaltake. The goal of these plastic dividers is to create separated thermal chambers inside the case, so the hot air generated by the video cards will stay isolated in one section and won’t circulate on the rest of the case, which would increase temperature inside the PC. The same goes with the hot air generated by the CPU.

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Figure 9: Advanced Thermal Chamber.
This system uses four plastic parts. The first part is a plastic panel with a rubber skirt at the end, separating the video cards and other daughter boards from the rest of the case. The second part is just a plastic cover that fits on top of the daughter boards. The third part is another panel separating the chamber containing the expansion boards from the chamber containing the power supply. This panel also has a hidden drawer for you to store screws or whatever you want to hide. And the fourth part is just a plastic cover that goes on top of the power supply chamber.
So with this system installed your PC has three separated chambers: the CPU chamber, the video card/expansion boards chamber and the power supply chamber.

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Figure 10: The hidden drawer.

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Figure 11: The lower section of the case with the two covers removed.

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Figure 12: Inside Spedo Advance Package with the plastic panels removed.