Fitting an ATX PSU
The PSU fits directly to the foot on the BC1. Whilst is can in principle be installed on either side, the typical position is on the foot at the top side of the body (where the integrated handle it) as this will not block the drive slots.
There are several slots and holes that allow for different orientations but only 3 thumbscrews are required to secure it. The typical installation is with the fan facing upwards to allow airflow but it can be flipped if required.
Place the PSU against the foot, align the holes and use the included 6#32 thumbscrews
Fitting an SFX PSU
The method for fitting an SFX PSU is the same as the ATX PSU, the only difference being the holes that are used on the foot.