2nd Ethernet NIC not working when PCIE card installed J4125

Ran into an issue where when I add a PCIE USB3 card to the NVME slot via an NVME adapter, the ethernet port closest to the NVME slot stops working in Linux. The card works fine either way. The card/adapter is powered from the HDD power connectors and it does not seem to be a power issue.

I’m running Manjaro Linux and I’ve tried both of these cards and the same exact thing happens when they are plugged in. The NIC is still recognized but it is unable to connect to anything.

Have you add external power to the add-on card?

As I said above, it is powered from the HDD power connectors on the Seeed board

Getting any kind of tech support from Seeed is like pulling teeth. Any help on this at all?

@blazini36 We have got a similar card and confirm this issuse, we are locating the root cause now.

@blazini36 We have tested 3 kinds of PCIE-USB3.0 cards and finally found that the intel CPU can’t provide enough current for PCIE RST signal. The signal be pull down by the card and the NIC is affected. We will fix this issues in next version.

thank you for helping us troubleshoot a hard to find problem, we are plan to give you a little coupon as compensation, can you provide us with your email address?

Email address is blazini36@gmail.com. Any idea what I can do about this with the boards I have? I purchased these to test with a machine I build at the suggestion of your Sales person who is now on Maternity leave. I kind of need both NICs to work as well as the PCIe card.

I am using a USB3->1gbe adapter on the native USB3 port for the 2nd NIC for the time being, that’s not going to work as a permanent solution for this device.

It’s nice that you guys admitted to there being a hardware flaw on the board but offering me a $20 coupon for a future order doesn’t solve the fact that I have 2 Odyssey X86 boards that aren’t able to do what they are supposed to do. I’d email someone but your support people don’t do well with that.

Can someone provide me a solution for this problem with the boards I have or provide me with some version that does not have this issue?