ROG Maximus Extreme Z790 // No 10Gb Marvel // External Pcie Card not Working // Bios issue ?

[Shurrikh]

Hello,

I'm the owner of a Z790 Maximus Extreme, had the MB since 2022 and everything works well.
I have a 12th Gen i9-12900K and 64gb of DDR5 ( 4 slots used ) running at 5200MHz and a 3080.

I have multiple questions, I'm sorry in advance if this is too much:

1.  The 2.5 port works fine ( I get full speed ), but the 10 doesn't.By that I mean when I plug my cable nothing is going on, no link, no lights.
   Windows sees it, I tried disable and enable it in bios to no avail ( I attached a pic down the post ). I'm trying to make it work since my optic fiber delivers 10Gb, and I do have a shielded CAT8 cable brand new.
   
   
2. Therefore, I tried 2 different pcie cards thanks to a friend, an Asus XG-C100F , and a Intel X540-T1 10Gb , tested on the second PCIe slot under GPU but when I boot, the BIOS tells me to switch the " cpu pcie configuration mode" to "pcie16x + 16 etc", which I do, then it tells me to switch back to Auto-mode.
   
   I guess I have too much M2 ? I also use the DIMM.2 slot, maybe the culprit ?
3. Could this be a Bios Issue ?
   I haven't updated in a long time since everything works well, I'm still on BIOS 1101 from 1/26/22, and not very sure if I should upgrade to a more recent one, and how not to ****** it up (this is my work and gaming rig )
   
   Sorry for the long  post, if you need more details I will provide them
   Have a good day
   
   

[achugh]

Hi @Shurrikh have you checked your cable? You mentioned that you tried other cards plus Windows is reporting that the hardware is working properly. All this information points to possibly a faulty cable.

[Shurrikh]

Hello, yes, It's a brand new Cat8 cable, tried also CAT5 and 6, nothing works.
It feels like a dead port

[Rooke]

Do you have the latest drivers for that network adapter?

[Rooke]

Do you have the latest drivers for that network adapter?

[Shurrikh]

yes, i even tried some old one recommended here / reddit too sadly 😕

I will try to get a thunderbolt 3 to 10gb to see if there is an issue too

[achugh]

Hi @Shurrikh from your original post

when I plug my cable nothing is going on, no link, no lights

---

This points to a faulty port like you said assuming you have a good working cable. When a cable is plugged in you should see some lights. See page 2-30 of your user manual for various light patterns. I am also assuming that you have this device enabled in BIOS. Can you post a picture of your BIOS?

TIP: Once you are in BIOS, connect a USB Flash drive to any USB Port (including Front Panel Ports). Then press F12 to take a screenshot of the BIOS screen. You will be shown a screen to confirm the drive, press ENTER and wait a moment for the file to be saved to your USB Drive. This will make your BIOS pictures very clear instead of taking pictures from your phone. These pictures are saved in BMP format so once you get back into Windows, double click on them to open them in Windows 11 Photos application and press CTRL+S to save as JPEG file. This JPEG file you can easily upload/paste here to share.

Regarding the additional cards you tried, it seems you tried them in PCIEX16(G5)_2 slot; see PAGE 1-2 of your user manual for the board's layout details. This slot shares the data lanes with M.2_1. Have you tried these additional cards in PCIEX4(G4). This is 4 lane slot and hence is not a full length slot which is why you may tried the PCIEX16(G5)_2 slot as it is easy to put any card into this slot.