not the link i remembered but some good info:
http://blog.zorinaq.com/?e=42
It is not very well known, but the PCIe specification electrically supports down-plugging a card in a smaller link connector, such as an x16 card in an x1 connector.
However PCIe mechanically prevents down-plugging by closing the end of the connector, for a reason that I do not understand.
Some motherboards require pins A1 and B17 to be shorted for an x16 card to work in an x1 connector.
Topic: Modify x16 riser cable to be x1 to x16? - page 3. (Read 5203 times)
Has anyone tried modifying a Pci-e x16 riser cable to be x1 to x16? I've tried this for 2 of my cards, when installed, it wasn't very stable and on of the cards had it's load varying from 64% to 100% several times a second. Took everything apart and put it back the way it was, 2 GPU's on 2 mother boards, just so I can keep mining as I was. Upon close inspection I found that I nicked the last connector on the riser cable, it was passing continuity but barely. I figured I should ask if this works before trying it again.
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