Lower PCIe gen for legacy hardware

Question

Hello,

I’m trying to add a board for FPGA development (PCIe‑8362) to a Dell PowerEdge T360. The card’s manual says to disable ASPM, so I switched the system profile to **“Performance”** in the BIOS. It also mentions disabling Kernel DMA protection, but I haven't found the option. After changing the ASPM and rebooting, the BIOS still does not list the board in the list of PCI-e devices.

Additionally, I heard that lowering the PCIe link width/Speed from Gen4 to Gen3 might help. I couldn’t find any setting in the BIOS to force Gen3 for a particular slot. Is that even possible on this server? If so, how do I set it?

DELL-Chris H · Answer

User_6f6071,

My first thought is regarding the compatibility of the card you are trying to use. Would you do me a favor and verify the part number of the card for me, as well as if the server is up to date on BIOS, iDrac, etc?

Let me know and we can go from there.

user_6f6071 · Answer

@DELL-Chris H ​ Thanks for the reply, we would try to update the system as soon as possible and try again. In the meantime, the part number is 779502-01.

Dell-Martin S · Answer

Thx

PowerEdge Hardware General

Lower PCIe gen for legacy hardware

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