A Closer Look - Inside
To access the interior, swing the glass side panel open and pull it off its hinges. The opposite side may be taken off by releasing the thumb screws which hold it in place. A short metal shroud on the bottom hides the installed PSU. It allows for up to two installed 120 mm fans as well, which could be of some interest with the inverted motherboard layout.
On the other side, things are pretty traditional for a modern ATX case with a flipped motherboard area. You will find a solid three 2.5" mounting plates above the opening for the CPU cooler bracket, which would reside underneath said opening in a normal enclosure, for example.
If you buy the Seasonic Syncro Q 700 series chassis on its own, you will find a plastic cable channel where one would mount the Connect module instead. It is nice to see Seasonic give us some usability even without that unique power source. Inside it is a branded Velcro strip with two points where one could attach the unit. Openings on the sides allow you to easily route cables to their right locations over as short of a distance as possible.
In the front, on the floor, are two steel boxes for 3.5" drives. You may remove these by releasing a thumb screw that holds both in place. These hide any such installed drives fully, so I can see why there is no need for the shroud to go across the whole bottom of the chassis. The benefit is clearly that you may remove them both for loads of space for thick liquid-cooling setups. Above that are the three 120 mm Nidec fans in all their glory, with big hubs and of serious build quality.
In the rear, underneath the shroud, is the PSU bay with four thick foam squares for the unit to rest on. With ample room, you won't have any issues installing extremely powerful, long variants either. Above that are the seven expansion slots with their individual covers which are held in place by a thumb screw each, as well as the fourth Nidec fan.
In the ceiling, you can clearly see the shape of the air vent, as well as the mounting positions of the fans and the space you have to work with when adding cooling to this area of the Syncro Q704.
All the cables within the Q704 are sleeved black and actually fairly short to accommodate that your motherboard is flipped upside down, which is a nice touch.