The rear panel houses eight expansioin slots and a single 14cm fan (1100RPM). The expansion holes have mesh covers, although closed covers may seem more fitting for a silent case.
There are four water cooling holes, so that appropriate water cooling components can be operated or mounted externally.
PSU is mounted in the bottom, fan down, but can be mounted facing up as well. The PSU dust filter is removable without opening the case. It’s long enough to cover the 120/140mm fan slot as well. The Deep Silence 1 has 2cm feet and is quite stable on them.