These connectors were manufactured by Elco/Kyocera, they are from the 8283 series. They are very similar to the JST PH series but different enough that they are not compatible. They were popular for use in computers from the late 1990's early 2000's. Intel used them on their retail slotted CPUs for …

I would also love to purchase a bare PCB, I'm too new to this forum to do PM's though. If the OP could provide with whatever information is needed to purchase (if they are available) I would be appreciative.