Network card not working in PCIE slot 5 (X570)
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=12242
Printed Date: 30 Jul 2025 at 6:01am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Network card not working in PCIE slot 5 (X570)
Posted By: Czevolk
Subject: Network card not working in PCIE slot 5 (X570)
Date Posted: 20 Aug 2019 at 12:24pm
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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? |
Replies:
Posted By: Ray62
Date Posted: 20 Aug 2019 at 3:35pm
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PCIE_5 is for 4 PCIe lanes. Maybe you have to configure/enable the slot in the bios. ------------- Asrock Fatal1ty X370 Professional Gaming Offline Under test: MSI X570_MEG_ACE | AMD Ryzen 9 3900X | Scythe Mugen5 | 2x16GB F4-3200C14D-32GTZ@3466 | ASUS GeForce GTX 1080 Ti FE |
Posted By: Ray62
Date Posted: 20 Aug 2019 at 3:57pm
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BTW: If your network card has 8 pcie lanes, there is no other way as using PCIE1 and PCIE3 in 8-8 mode. ------------- Asrock Fatal1ty X370 Professional Gaming Offline Under test: MSI X570_MEG_ACE | AMD Ryzen 9 3900X | Scythe Mugen5 | 2x16GB F4-3200C14D-32GTZ@3466 | ASUS GeForce GTX 1080 Ti FE |
Posted By: Czevolk
Date Posted: 20 Aug 2019 at 9:39pm
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. |
Ray62 wrote:Posted By: Ray62
Date Posted: 21 Aug 2019 at 4:17am
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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. ------------- Asrock Fatal1ty X370 Professional Gaming Offline Under test: MSI X570_MEG_ACE | AMD Ryzen 9 3900X | Scythe Mugen5 | 2x16GB F4-3200C14D-32GTZ@3466 | ASUS GeForce GTX 1080 Ti FE |