Of course, installation of the RS850-S-B is pretty straightforward. First mount the PSU in the case. I found it kind of interesting that this is the first PSU that I have been able to use all four mounting screws in a long time, even when the cases have oversized holes.
Then, connect power to all of the necessary places. I usually try to separate the power cables as they are coming from the PSU, and try to run them in a logical order, to help with cable management. I know that makes little sense if you haven't done it, its kind of hard to explain.
As I mentioned earlier, the PSU's cables are plenty long. If you will notice, the SATA cable is stretched to the first hard drive, and it doubles back to the top of the case. That may be a little overkill, but nice if you are using a full tower. I have owned PSUs that the cables would caused problems with large cases.
As the RS850-S-B has a full compliment of cables, there are plenty of cables left over. As I always have, I will end up wadding the cables in the top of the case in front of the power supply. Rosewill has included a Velcro strap for this purpose. I have used straps of this kind a lot for guitar cables and microphone cords, so its inclusion is greatly appreciated.
The strap worked out pretty well. Yeah, this looks bad, but just wait until I get done.
Once I get the case turned upright, the wad of cables is pretty unnoticeable, and it pretty much disappears once I get the Tuniq's 3D fan rail reinstalled. The PSU looks nice.