Product Showcase

You can mount very lengthy power supplies in the chassis, so that won't be an issue, 210mm is how long they may be. The PSU will sit on four rubber pads, to ensure that no vibrations/noise passes on to the Pure Base 600's frame. 

 
The feet are rubberized giving more grip to the surface and again preventing resonating noises escaping from the PC. There is also a removable dust filter located at the base (PSU fan location).
 

Here we have removed the backside panel, grommet holes for cable management, as stated not rubberized. You can see a nice and big CPU motherboard cut-out and two SSD mounts reveal themselves.
 

Admittedly, I like the design very much, simple yet aesthetically very pleasing. Two SSDs can be housed. Simply screw the SSD to the tray, and re-insert and re-secure the unit with the thumbscrew, it is as simple as that.