DC7900 expansion card turns display port off. (767 Views)
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Registered: ‎11-18-2011
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DC7900 expansion card turns display port off.

System. dc7900 - BIOS 786G1 v1.26




Table 2-2 identify expansion slots
1 PCI expansion slot
2 PCI-Express x16 expansion slot,
on the one x4 slot
3 PCI Express x16 expansion slot
4 PCI Express x1 expansion slot

Once a card plugged into the No. 3 slot the display port shuts off.
This is not documented anywhere.
It is an expansion card, not a graphic card.
It does not matter what kind of card in the slot. Each turns the display port off.
Tested with USB 3.0 x1 card, sound card x1, x1 sata raid controller.
All cards work perfectly in all other slots.
About Help I would be grateful.





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