Disassembly
With the side panels already off, let’s proceed to take apart the chassis. The front panel is easily removed by unhooking the flaps that hold it in place. The entire front face comes up with ease and reveals that large vent we mentioned earlier. A bay guard is also present which should be removed if you need to use the 5.25″ drive bay.
The large vertical column on the right side of the Colossus mATX needs to be removed if you want access to the motherboard tray. This column holds up to two(2) 2.5″/3.5″ drives vertically and can be removed by unscrewing 4 screws.
Once that column is off, you get full access to the internal of the Colossus mATX.
To mount the PSU, you need to unscrew the mount that holds it in place. The screws are accessible via the bottom of the CPU in the PSU cutout.
If you want to mount a radiator or a very long-ass GPU, you’ll want to get rid of the 5.25″ bay tray on the top of the chassis. With the front panel off, you can remove 4 screws that hold it in place then remove the remaining screws that lock it in place from the side of the Colossus mATX.
And here we have a disassembled Colossus mATX ready for system occupation.