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Pro WS WRX90E-SAGE SE, only PCIE expansion slots with redriver work with Blackmagic 8k card

schramme
Level 7

Hi there,

I would like to equip the WRX90E with at least 4 Blackmagic cards (Pcie Gen 3), unfortunatly only the last three slots (5,6,7) are working, I noticed from the manual that these slots are connected via a redriver. I tried also to set the none working slots to Gen3 via the bios, but without any luck, a BM card put into the first 4 slots does not appear at all in the system. The two PCI_8P_PWR are connected to the psu (1.3kW). I should also mention a GPU put in slot 1 is working fine.

What is the problem with pcie slot 1 to 4 and is there any solution?

Help is much appreciated.

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