Weird thing with my server -
If I move the PCI cards around to an order that makes sense, like putting the tuner cards together, it won't boot, and some arrangements won't post.
I wanted the USB bracket in the slot that isn't actually a slot in the board (plugs in to USB headers), and I wanted the RAID card next to that for more air and so the fan I added is away from other cards. Nope.
They only work in 1 order. At least the card by the RAID fan is the tiny USB 3 card.