THE DARK BASE PRO 901 INTERIOR

Interior space is ample and yes, even larger than its predecessor (left the parts box on purpose inside the white variant so you can all see how secure it is).

Even though there are already two 140mm Silent Wings 4 PWM fans installed at the front of the case you can either add one more 140mm fan, replace all three with 120mm fans or install an 240/280/360/420mm radiator.

Just a single 3.5" drive cage is bundled with the Dark Base Pro 901 but if you need room for more there's a total of 5 cages on the far right of the motherboard tray (if you don't need these 5 spots you can remove it to install the bracket for the 240/360mm radiator).

The plastic cover behind the fans can be removed either to install an 420mm radiator (will need to remove the drive cage underneath) or to install the angled and perforated plastic cover found in the bundle (redirects air towards the graphics card and CPU).

The PSU shroud covers the entire bottom (dual chamber design) and has the model line on it.

It's easy to notice that the motherboard tray has no grommets on it because be quiet! has placed a horizontal and a vertical opening for the cables.

Taking a look on the opposite side of the motherboard try we find two 2.5" drive trays, 3.5" drive cage with two 2.5/3.5" drive trays and of course the PSU area.