Herb,

I've now posted pictures to better understand the setup.  The Pico PSU's come with a 4-pin ATX connector on them, but I'm of the opinion that there's no point in drawing extra 12V wattage through the Pico PSU when we have a more reliable source as it is -6-pin PCIe cables from breakout board- and it doesn't require any more slots.  So that's why I include a 6-pin PCIe to 8-pin EPS patch cable together to power the motherboard directly.  For the Biostar's you can just use the 4-pin ATX connector on the Pico and use the extra PCIe connector for something else low-wattage like a riser, there's no harm in doing so.  Here is how the Pico PSU looks connected to a motherboard (powered by 1 PCIe connector from motherboard):