Before we dive into the interior, the side panels are interesting in that they come with sound dampening material pre-installed. Because of the F-LUX setup within, the necessary air vent comes with a magnetic dust filter to keep dirt and grime at bay as well.
To access the interior, simply remove the two side panels by releasing both thumb screws on each. The interior of the P10 FLUX is pretty simple but effective overall, as the layout is exactly as expected from a modern enclosure. Antec did not try to re-invent the wheel here, but did well with the general design for a case of this price class. A metal shroud hides the PSU and 3.5" drive bays, but also offers two possible 120 mm fan mounts. According to the provided documentation, the mount in the middle should be used for the reverse fan, which makes sense as the one on the left would mostly be blocked off by the power supply.
Towards the front of the chassis are two hard-drive mounts, with the top mount for a 3.5" drive and the bottom one for a smaller 2.5" variant. While this is fine, Antec could have included mounting holes for a 2.5" drive in the same area as for a 3.5" one, for more flexibility at essentially no further cost. There are two more Antec-branded Velcro strips to hold cables in place, which is also something you don't see in cases that go for around $70.
Towards the rear of the case, underneath the large opening for the CPU cooler mounting bracket, is a 6-port fan hub that utilizes a SATA power connector. While there is unfortunately no way to control the fans though the motherboard's RPM signal, Antec allows the user to select between a low and a high speed option with the button on top. Next to it are two individual 2.5" hard-drive trays made out of steel, which may be removed to make assembly as easy as possible.
Underneath the shroud in the front is a single-bay cage for a 2.5" or 3.5" drive, with the optional ability to firmly screw another such unit to the top of the cage if the whole contraption is removed from the chassis. This brings the total number of storage placement options to a very respectable six. Above that, the front is essentially just for cooling, and also allows for a radiator of up to 360 mm without issue. If you look closely, you will see another magnetic dust filter, which brings the total within the chassis to an excellent three, covering all intake areas with a layer of dust protection. In the very top is the 5.25" drive bay, which is simple but perfectly effective at holding an optical drive, or other externally accessible part that will fit.
In the rear, once again underneath the shroud, the PSU bay comes lined with two long, soft strips of foam as an anti-vibration measure. Above that, in the interior, things are pretty traditional, with the horizontal expansion slots and 120 mm exhaust fan in the very top.
In the ceiling, you will find another sound dampening layer covering the whole area. This means that all solid panels, including the front door, are equipped with this layer to reduce any externally audible noise.
All the cables within the Antec DF600 FLUX are of the default variety, but interestingly, the reset cable is now explicitly labeled "Fan," which may be an indication that we will have to bid that function goodbye in the long run as more and more cases re-purpose that lead for fan or RGB control.