A Closer Look - Inside

To access the interior, simply remove the thumb screws to pull off the panels. Once inside, you will be greeted by a simple no-frills interior that is mean to be functional above all else. The shroud comes with air vents on which you may mount two 120 mm fans. While this is cool, it will make it harder for you to reach the connections on the motherboard once it is all in place. On the backside of motherboard tray, you will find several holes for cable routing, and Montech has gone as far as to add rubber grommets for clean cable routing, which is nice to see.


There is a plate that allows for up to two SSDs to be installed easily, but the chassis has more mounting holes for up to four additional drives towards the front of the chassis. Doing so will make your life a little harder with the cable routing as you will end up covering a hole if you go all out. The Air 900 also offers mounting holes for pumps or reservoirs in this area instead.


In the front are two 3.5" trays underneath the shroud, which could also hold 2.5" drives instead, while the rest of the space above is intended for cooling. You may install up to three 120 mm fans here or even go for a thin 360 radiator combo by moving the HDD cage back into the chassis further.


In the rear, the PSU bay is pretty basic, but that is just fine. There is plenty of space, so you should be able to utilize all but the most extreme units for your build. Above that are the eight aforementioned expansion slots and the second 120 mm fan.


Looking at the ceiling, you can clearly see the cutouts where you would install your fans or even liquid cooling. Even when using 140 mm fans or a 280 mm radiator, there is plenty of space for the motherboard components.


All the cables within the Montech Air 900 ARGB are of the default variety, but you will have to pull apart the audio and USB plugs as they come still attached as one big flat-band cable. In addition to this, I noticed an additional 2-pin connector in the bunch of case leads. Turns out that is the LED toggle switch cable you can connect to a generic RGB controller. Some more affordable brands simply re-purpose the reset button, so it is great that Montech is going the extra mile by not doing so.