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vinmor's avatar
vinmor
Icon for New Contributor rankNew Contributor
3 years ago
Solved

DE5a-Net-DDR4: PCIe connection

Good morning everyone, I have the DE5a-Net-DDR4 board with Arria 10 and I need to use it with OpenVINO 2019 R1. I have two questions about the PCIe connection. 1) The DE5a-Net board has Support f...
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  • Wincent_Altera's avatar
    Wincent_Altera
    3 years ago

    Hi,


    Question 1,

    A PCIe x8 card will physically fit into a PCIe x16 slot, and it will work as expected.

    The extra lanes on the PCIe x16 slot won't cause any issues.

    The card will only use the available 8 lanes and operate at the x8 speed.


    Question 2,

    Please follow the manual in DE5at-net by connecting the 6-pin PCIe external power connector to avoid damage to the board.


    Let me know if further clarification is needed.


    Regards,

    Wincent_Intel



vinmor's avatar
vinmor
Icon for New Contributor rankNew Contributor
3 years ago

Thanks so much for the quick replies!

For question number 1 everything is clear!

For question number 2, my doubt arose because in the OpenVINO guide it is written that the step about the power supply via 6 PIN cable can be skipped if this cable is not present.
My PC's power supply doesn't have the 6 PIN cable, but if I understood correctly, I still have to equip the power supply with this cable to avoid damage, am I right?

Thank you,
Best regards

  • FvM's avatar
    FvM
    Icon for Super Contributor rankSuper Contributor
    3 years ago
    Hi,
    if card can be supplied without external 12 V supply depends on the power consumption of your application. If the logic resources are fully utilized, it will be required. Surely your PC power supply has some kind of 12 V connectors that can be converted to 6 pin through adapters available on the market.