Thanks I was looking at some of the mini 1050 and 1060's i think they will fit maybe haha might have to do some "mods".Most video cards won't fit in this server due to the proximity of the PCI Express full height slots to the DIMM locations. If the card is too long, it won't fit. You'll want a GPU that is geared towards Mini-ITX if you want something to fit - GPU can't be much longer than the actual PCI Express x16 slot itself. About 2-3 inches longer is the limit. I've got Quadros in mine and the server works great with them and PCI Passthrough. 0 issues.
As for power, those ports you mentioned are for GPUs, so if you get a card that requires external power, you can just power it off those.
Amazon.com: COMeap ATX CPU 8 Pin Male to Dual PCIe 2X 8 Pin (6+2) Male Power Cable for Corsair Modular Power Supply 25-inch+9-inch (63cm+23cm) : Electronics
Amazon.com: COMeap ATX CPU 8 Pin Male to Dual PCIe 2X 8 Pin (6+2) Male Power Cable for Corsair Modular Power Supply 25-inch+9-inch (63cm+23cm) : Electronics
www.amazon.com
I think this cable will work. Over all been running your bios for over week no reboots on 4 servers running strong. This is great hardware.