To gain access to the interior of the chassis, simply remove the thumb screws and pull the panels off. While the interior offers plenty of unique tooling, the general layout of the Arx 700 Air follows that of current modern enclosures. The shroud at the bottom does not stretch across the bottom, leaving a gap for thick radiator setups in the front. Endorfy has designed this cover to hold an additional fan to cool the GPU as well as two 2.5" drives. While there is a nice rubber grommet covered cutout to route PCIe power through in a clean fashion, the two other openings will be difficult to cleanly cable manage. It would have been nice if these were more compact or had grommets on them as well.
On the opposite side, the general layout is as expected as well, but there are several details that stick out. The main cable management routes have grommet covered openings, which is really nice to see. Much like most ATX mid-towers out there, the Arx 700 Air allows for two 2.5" drives to be mounted unto the back of the motherboard tray, below the large CPU cooler access cutout.
Endorfy has a total of six Velcro ties pre-applied with the wiring somewhat pre-routed in a well enough fashion that you could skip trying to make it look cleaner. On top of that there is a 5 port PWM fan hub, which takes a motherboard signal and distributes it across the installed fans. This is nice, but Endorfy should have provided an 8 port one so that the case could support a full load-out.
Towards the front at the bottom of the chassis, there are mounting points for a 2.5 or 3.5" drive on the floor of the chassis. Above that, there are the three 140 mm, retail grade fans set to push cool air into the case through the front.
In the rear, the PSU Is pretty traditional, but Endorfy did add two full length, cleanly installed foam spacers for your unit to sit on. Above that, the expansion slots come with classic screws, which you may access from the exterior by flipping open the magnetic, hinged cover. In the very top, there is yet another 140 mm unit set to push air out the back.
In the ceiling, you will find the fifth 140 mm unit also pulling air out the top. There is tons of room for three units of this size, but Endorfy mentions that the ceiling will fit a 360 mm radiator at most. Thanks to the distance to the motherboard, even thicker variants should not interfere with your setup either, which is great to see.
All the cables within the Endorfy Arx 700 Air are black and sport the usual plugs. On one hand both the USB wiring is flat, which makes for easier cable management, but the case header connectors are not unified into a single connector - something a lot of brands have started to do lately.