Been doing a lot of stuff recently that requires 3.3V and 12V at moderate currents. The simplest commodity way to do this seems to be a PC power supply. The 24 way ATX connector is a bit clumsy and you only get one per PSU, so it seems simpler to use SATA connectors as a handy ecosystem of3.3/5/12v power at up to 4.5A per rail. A scattering of these provides the necessary few hundred watts.
We've been doing this for a while and it works nicely (though with a custom loom). However, I've failed to find any male SATA power connectors without accompanying data part. Do they exist? Having a spurious SATA data connector is a waste of space, and confusing in a system which does have real SATA cabling around too.
Anyone use any other methods for commodity multi-voltage power supplies?