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- Mar 3, 2026
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Boys, need some expert eyes on a hardware issue. Recently swapped my rig to an ASUS ROG Crosshair X870E Hero, and my DMA setup has completely died on me.
The situation:
My DMA card (been running it for a few months with zero hiccups) refuses to handshake with the new mobo. I've got a constant green light blinking on the board, and the speedtest utility keeps throwing a no-connection error.
Has anyone else dealt with X870E board incompatibilities when running DMA hardware? I'm worried it's either an IOMMU setting in the BIOS or some weird PCIe power delivery quirk with this new platform.
If anyone has a similar setup or knows how to force the link for these newer AM5 boards, drop your suggestions below. Appreciate the help.
The situation:
My DMA card (been running it for a few months with zero hiccups) refuses to handshake with the new mobo. I've got a constant green light blinking on the board, and the speedtest utility keeps throwing a no-connection error.
- Board: ASUS ROG Crosshair X870E Hero
- Symptom: Flashing green LED, zero link-state detected by host software.
- Troubleshooting so far: Checked PCIe slot bifurcation, but this board's chipset/lane management is a nightmare compared to my old setup.
Has anyone else dealt with X870E board incompatibilities when running DMA hardware? I'm worried it's either an IOMMU setting in the BIOS or some weird PCIe power delivery quirk with this new platform.
If anyone has a similar setup or knows how to force the link for these newer AM5 boards, drop your suggestions below. Appreciate the help.
