PCIe bifurcation

• JL

  James Liu

  9/21/23, 11:13 PM

  Hi,

  I was trying to set one of the pcie x16 to 4x4x4x4 to add another 4 m.2 drives using an adapter card.  I know the setting should under Device Manager -> Platform Manager -> PCIe Root Complex, but I really have no clue which Root Complex is corresponding to which pcie slot on the carrier board. I changed Root Complex 0 setting, and USB ports stop working. I have to buy a D9 to USB adapter to access to the EFI again.

  It would be appreciated if some help or documents can be provided.

  Thanks

  James

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• 

  Master of SMARC Staff member

  9/27/23, 4:50 AM

  Hi James, 

  I think the manuals of module and carrier might clarify this for you 

  Module > https://www.adlinktech.com/Products/Computer_on_Modules/COM-HPC-Server-Module/COM-HPC-ALT?lang=en

  Carrier > https://www.adlinktech.com/Products/Computer_on_Modules/COM-HPC-Server-Carrier-and-Starter-Kit/COM-HPC_Server_Base?lang=en

  you can for both see the manual downlod top right  side

   

   

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• Dd

  Derek den Haas

  10/3/23, 5:05 PM

  The first slot is root complex #1, so set this to 4x4x4x4.

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