Sphere478 wrote on 2021-01-22, 02:34:
The Serpent Rider wrote on 2021-01-22, 00:02:
AFAIK no, you can't connect PCI like that. This will result in conflict when two cards are connected, so PCI bridge is required.
Looking at the riser now. It does seem to have some kind of chip between
That chip is very unlikely to be the required PCI bridge chip (EDIT: or maybe it is or, more likely, that photo shows only part of what is needed and the actual bridge chip is on the host PCI card).
To properly and safely expand a PCI bus, you need to use an expansion chassis with a PCI bridge chip , like this, for example https://www.onestopsystems.com/product/13-slot-pci-expansion (probably overkill for your needs). EDIT: Cheap and reliable PCI and PCI Express chassis for PCI Express slots do exist (and use a bridge chip) . I have one . No idea if you can use an additional PCI to PCI Express bridged adapter with one of those .
As mentioned before, expanding a PCI bus is a lot more complex than doing the same for ISA . I am not an expert at PCI, so more knowledgeable people can correct me if necessary, but I am pretty convinced that wedging one of those passive PCI backplane expanders in a random PCI slot will not work .