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@Hugotai How did you find the pci-aspm-default as the root cause for the system instability that so many people had with this card? I am curious where the info came from since the internet has almost no details other than your post about it. Thanks

Just wanted to post a thank you here. I purchased the DW1820A and after messing with it for a few hours, I was ready to toss it in the bin. I was having system instability and the dreaded system hard lock after 10 minutes. By configuring "pci-aspm-default" to 0 all instability is gone...

I just recently purchased a DW1820A for this machine after mixed reviews for the wireless card, I was not willing to spend ~$90 on a wireless card. After trying many things and ending up with system instability I found this post THE Solution:Dell DW1820A (Broadcom BCM94350ZAE) macOS 15 after...