Product Showcase - Interior
Quick photo, all cabling is black and mostly all wiring and connectors as well. That again brings a better aesthetic feel to the chassis. The Molex connector is used for the fan controller and this one powers all fans connected to that hub.
So SSD mounting is happening on the backside, simply take out one tray, secure it with screws and mount it back in. You may mount three SSDs.
You'll find fairly tool-less drive trays that will support 3.5" drives ready to be inserted into the chassis. Installation of the HDDs is really easy. You can place them into one of the 3.5" drive trays then at the bottom screw and secure 4 rubberized inserts and you are done.
Then just slide them into the drive bay and at the rear side you can connect them and route cabling. The beauty of the design is that you will not see the actual HDDs in sight from the motherboard side. The chassis is listing space for 3 HDDs, two trays and thus HDDs will fit though.