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Network card not working in PCIE slot 5 (X570)
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Czevolk View Drop Down
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    Posted: 20 Aug 2019 at 12:24pm
I'm having issues getting a network card working in slot 5 of my x570 Taichi. In that slot Windows 10 doesn't detect it at all. If I move it to PCIE_1 and my video card to PCIE_3 then it works fine, but that isn't optimal as it forces my GPU to run in x8 mode. If I want the GPU to run in x16 then it has to be in slot 1 with slot 3 empty, so the network card has to be in slot 5.

I only have one nvme drive in M2_1 so PCIE_5 should be working, but plugging it into that slot makes it disappear from Windows. Is there some setting somewhere that I need to flip to enable that PCIE slot?
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Ray62 View Drop Down
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Points: 706 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ray62 Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 2019 at 3:35pm
PCIE_5 is for 4 PCIe lanes.
Maybe you have to configure/enable the slot in the bios.
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Points: 706 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ray62 Quote  Post ReplyReply Direct Link To This Post Posted: 20 Aug 2019 at 3:57pm
BTW:
If your network card has 8 pcie lanes, there is no other way as using PCIE1 and PCIE3 in 8-8 mode.
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Originally posted by Ray62 Ray62 wrote:

PCIE_5 is for 4 PCIe lanes.
Maybe you have to configure/enable the slot in the bios.


It's definitely an x4 card. How do you manually enable the slot? I was poking around the BIOS but I couldn't find anything like that. The closest I found was the "AMD PBS" section under Advanced which lets you set the PCI Gen, which I've tried to set to 3.0 manually but didn't make a difference.
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Points: 706 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Ray62 Quote  Post ReplyReply Direct Link To This Post Posted: 21 Aug 2019 at 4:17am
I don't know your bios, i have a Fatal1ty X370 Pro Gaming.
In another forum someone is running a Thunderbolt 3 Controller (PCIe 3.0 x4) in PCIE_5 with a ASRock X570 Taichi/Phantom Gaming X.
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MSI X570_MEG_ACE | AMD Ryzen 9 3900X | Scythe Mugen5 | 2x16GB F4-3200C14D-32GTZ@3466 | ASUS GeForce GTX 1080 Ti FE
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