A Closer Look - Outside

Out of the box, the Corsair iCUE 4000D RGB Airflow features the same extremely clean looks alongside a few unique design elements to set it apart in its price segment with an abundance of choice as with the original 4000D variant. As such the window panel is still nice and clean, with flush gaps to the rest of the chassis, and the yellow touches do help the case stick out, along with a uniquely designed front air grill.


In the front, the air intake is essentially one metal plate that may be taken off to reveal a uniquely shaped plastic frame that forms a flat air funnel. In the center, a very fine, easily removable dust filter protects the intake area from dirt and grime, all while allowing for easy access and cleaning. The Corsair iCUE 4000D RGB Airflow ships with three AF120 Elite intake fans in the front. Alternatively you may also opt for two 140 mm units instead. For those with liquid cooling in mind, the front can fit up to a 360 mm radiator.


In the rear, the enclosure looks pretty traditional, so to stand out, Corsair added small yellow accents to the thumb screws securing the side panel. As mentioned, the glass side panel is really clean and tidy and Corsair removed the heavy tint from the original 4000D, which is great to see!


Taking a closer look at the rear, the bottom PSU bay is underneath a shroud and comes with two sets of mounting holes. Above that are the 7+2 expansion slots. Each of these is protected by a removable and reusable cover that is held in place by a thumb screw. Even though you can install a dual-slot GPU vertically, you will, as with most cases out there, need to buy the required accessories separately. On top of that, while dual-slot GPUs were the norm two years ago, even for high-end variants, that no longer holds true today, so you will be limited in your choices should you want to go for this type of layout. In the very top is room for another 120 mm fan to push hot air out the back. As such, the iCUE 4000D RGB Airflow offers one more than the original 4000D Airflow and is closer in line with other brands out there. But even so, there are options out there that provide four or even five fans out of the box at a similar price point, alongside RGB controls and the likes.


Across the top is a large magnetic dust filter that comes with the same triangular-shaped cutouts instead of simple round holes. Corsair also added a yellow silicone tab for easy removal, which is a nice touch. Underneath it, you will find the ability to install two 120 or 140 mm fans, or up to a 280 mm radiator. In the very front is a single USB 3.0 port with a yellow interior, fully fledged USB-C connector - which is now yellow to match, and combo 3.5" audio plug, with the power or reset button on either side. The implementation is quite clean, but there is no reason Corsair could not have included two USB 3.0 connectors, and unlike some competitors, they do not include an audio splitter cable, so if your headset happens to have two separate connectors, you will have to go out and find your own solution.


Underneath the case, a dust filter protects the PSU from dirt and grime—it may be pulled out for easy cleaning.