Question PCIe SSD card x4 mode in x16 slot using x8 mode

gabbagabbahey

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Aug 13, 2019
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Hi. I have an Asus P6X58D-E motherboard with three PCIe 2.0 x16 slots. They can either work in x16/x8/x8 mode or x16/x16/x1 mode. The 1st PCIe slot is taken by the graphics card. Would a PCIe SSD x16 card that uses only 4 lanes (x4 mode) work on the 2nd/3rd slots?
 
Please provide link to PCIE card in question.

If you configure PCIE slots in x16/x8/x8 mode,
then you can install x4 cards in PCIE_x16 slots #2 and #3 and they will work at full PCIE 2.0 x4 bandwidth.

This Sabrent which takes a single NVMe SSD for example. I was looking at others that take multiple cards, like the one, but I'm not sure my motherboard supports bifurcation.