While 450W may be enough to game on with a single video card, it most certainly isn't enough power to do much more than that. As such, it only makes sense for them to include a few cables and connectors with the ST45SF-G.
It is also worth noting that most of the cables are a bit shorter than many are used to. This is quite a blessing in small cases as there is less cable clutter to hide or fight.
Rail distribution is as simple as it gets with a single 12V rail. There is no need to worry about load balancing here.
A Look Inside
If you didn't catch it already, the ST45SF-G is a tiny unit and this shot of the internals makes it quite apparent. The PSU is only five inches wide and four inches deep. Passive cooling is important on such a small unit and there is plenty of it inside the ST45SF-G.
A single Panasonic bulk capacitor sits on the primary side of the power supply.
The secondary side is littered with a bunch of Rubycon and Nippon Chemi-Con caps.
Silverstone uses the ADDA AD0812HB-D70 80mm fan to provide active cooling.