Question Wi-Fi 6 PCIE Adapter not working in PCIE x1 slot

Oct 25, 2023
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I recently swapped out my old MB for a MSI MEG X570 Unify motherboard and and now my Intel Wi-Fi 6E AX210 based PCIE Adapter won't function in the bottom x1 (PCIE_4 according to manual) slot. I know the adapter is not defective because 1. I was using it the day before I installed the new MB and 2. I installed the adapter in the last full size PCIE slot (PCIE_5 according to manual) and it works fine. When installed in the x1 slot it does not show up in device manager nor does it show populated in the Board Explorer in the BIOS. I have 1 GPU installed in the first x16 slot and all 3 M.2 slots filled. I checked the manual but could not find anything about conflicts except that PCIE_2 won't function if PCIE_4 is being used (which does not apply here). I am just wondering if having all 3 M.2 slots are causing an issue and I missed or misunderstood some documention regarding this or if it is possibly a bad PCIE slot. I have problems with my hands and putting the system together/relocacting parts is literally painful so I am trying to see if someone has some info regarding this before I start doing more physical troubleshooting. Thank you in advance for your time.

MSI MEG X570 UNIFY with latest bios flashed to it via m-flash
Ryzen 5 5600X
ASUS TUF 3070ti in first x16 PCIE slot
32GM DDR4 RAM (2 16 GB DIMMS in slot A2/B2 running in xmp profile 2 @3600mhz)
1 1TB Samsung 980 Pro nvme in M.2_1 running at 4.0 x4
1 2TB Crucial (CT2000P3PSSD8) nvme in M.2_2 slot running at 4.0 x4
1 1TB WD Black nvme in M.2_3 slot running at 3.0 x4
Cudy Intel Wi-Fi 6E AX210 based PCIE Adapter (currently in 3rd x16 PCIE slot running at x1)

All options regarding PCIE lane configuration are set to Auto in bios.
 
just curious, why do you need two wifi and bluetooth adapters?

USB is connected onboard with the wifi adapter?

reset the BIOS

is the PCIe adapter connected deeply? Is the M.2 card inside the cudy adapter still connected completely?
 
I recently swapped out my old MB for a MSI MEG X570 Unify motherboard and and now my Intel Wi-Fi 6E AX210 based PCIE Adapter won't function in the bottom x1 (PCIE_4 according to manual) slot. I know the adapter is not defective because 1. I was using it the day before I installed the new MB and 2. I installed the adapter in the last full size PCIE slot (PCIE_5 according to manual) and it works fine. When installed in the x1 slot it does not show up in device manager nor does it show populated in the Board Explorer in the BIOS. I have 1 GPU installed in the first x16 slot and all 3 M.2 slots filled. I checked the manual but could not find anything about conflicts except that PCIE_2 won't function if PCIE_4 is being used (which does not apply here). I am just wondering if having all 3 M.2 slots are causing an issue and I missed or misunderstood some documention regarding this or if it is possibly a bad PCIE slot. I have problems with my hands and putting the system together/relocacting parts is literally painful so I am trying to see if someone has some info regarding this before I start doing more physical troubleshooting. Thank you in advance for your time.

MSI MEG X570 UNIFY with latest bios flashed to it via m-flash
Ryzen 5 5600X
ASUS TUF 3070ti in first x16 PCIE slot
32GM DDR4 RAM (2 16 GB DIMMS in slot A2/B2 running in xmp profile 2 @3600mhz)
1 1TB Samsung 980 Pro nvme in M.2_1 running at 4.0 x4
1 2TB Crucial (CT2000P3PSSD8) nvme in M.2_2 slot running at 4.0 x4
1 1TB WD Black nvme in M.2_3 slot running at 3.0 x4
Cudy Intel Wi-Fi 6E AX210 based PCIE Adapter (currently in 3rd x16 PCIE slot running at x1)

All options regarding PCIE lane configuration are set to Auto in bios.
Since the motherboard has built in wifi is there a reason you can't use that? If you want to use the PCIe adapter, did you disable the built in wifi in the bios? Is there a reason you can't leave the PCIe adapter in the PCIe 5 slot since it works fine there?
 
Since the motherboard has built in wifi is there a reason you can't use that? If you want to use the PCIe adapter, did you disable the built in wifi in the bios? Is there a reason you can't leave the PCIe adapter in the PCIe 5 slot since it works fine there?
I just have some stuff on my network that is tied to the MAC address of the PCIE adapter and it has two antenna rather then the one that came with the MB so I just figured it would be easier to just put the adapter in and no changes would have to be made.

I did load default settings in bios and disabled the onboard wifi. I still didn't show in the Board Explorer that PCIE_4 was populated. If I have to I can use the onboard wifi I am ok with that. I am just wondering if it is simply a setting or PCIE lane configuration issue that I am missing or if the slot is defective. The MB is new so I could still return it but as I stated in my original post taking everything apart and then having to put a new MB in and reassemble the system is painful because of my hands so I am just trying to rule out everything else before I have to do that (if it turns out to be defective). Thanks for your reply.
 
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just curious, why do you need two wifi and bluetooth adapters?

USB is connected onboard with the wifi adapter?

reset the BIOS

is the PCIe adapter connected deeply? Is the M.2 card inside the cudy adapter still connected completely?
I just have some stuff on my network that is tied to the MAC address of the PCIE adapter and it has two antenna rather then the one that came with the MB so I just figured it would be easier to just put the adapter in and no changes would have to be made.


I did load default settings in bios and disabled the onboard wifi. I still didn't show in the Board Explorer that PCIE_4 was populated. If I have to I can use the onboard wifi I am ok with that. I am just wondering if it is simply a setting or PCIE lane configuration issue that I am missing or if the slot is defective. The MB is new so I could still return it but as I stated in my original post taking everything apart and then having to put a new MB in and reassemble the system is painful because of my hands so I am just trying to rule out everything else before I have to do that (if it turns out to be defective). Thanks for your reply.
 
changing the MAC address of your integrated wifi:

just to ensure: enable onboard wifi, eventually the PCIe 4 is dependent on that, you can disable the integrated wifi in windows after that

also try the PCIe_E4 slot if possible

remove the m.2 SSDs one by one to be sure it´s not depending on that

eventually the wifi card doesn´t work with PCIe x1, can you try altering the speed of the PCIe_E5 manually to x1 and try if it still works
 

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