OK I have added only 1 card at a time and taken a picture of it. Its a USB 3.0 expansion card.
Hopefully this is correct.

Slot 1


Note that slot 2 does not work while bifurcation is disabled on the first slot. I re-enabled it (which is default) to get the hwinfo image.
Bifurcation Off


Bifurcation On


Slot 2


Slot 3


Slot 4


Slot 5


Slot 6

I'd try setting a slot eg. slot 6 to GEN1 and see if you can confirm the setting did indeed set to PCI Express 1.1 in HWinfo.
If it did try your TV card.