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Thunderbolt 4 AIC not appearing in device manager

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2H Media View Drop Down
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    Posted: 27 Jun 2024 at 8:45am
My new Thunderbolt 4 AIC is not appearing in the device manager, nothing happens when a device is plugged into it, and I do not have any unknown devices or Thunderbolt devices appearing in the device manager. Also, Thunderbolt Control Center lists the Controller driver version as "N/A"

The card is slotted into the second PCIE lane. I have temporarily removed my GPU to make this possible.
The USB cable is connected to the card and to the motherboard's USB_5_6 header. I have also tried the USB_3_4 header.
The Thunderbolt 4 cable is connected to the card and to the motherboard's Thunderbolt AIC Connector.
As described on page 42 of the motherboard's manual, I have moved the jumper cap from PD_RESET_1 (pins 2-3) to RTD3 (pins 3-4) - This seems odd as the manual for the AIC describes this as the AMD configuration, and this is an Intel board. I initially tried the default configuration for Intel. There was no change.
I have updated the BIOS to the latest version and enabled Thunderbolt support.
I have downloaded the Thunderbolt(TM) Controller software ver:Rev86_3 from the Thunderbolt 4 AIC R2.0 page.
I was unable to install the drivers from the disk, as Windows flagged them as vulnerable. - I did turn off some windows security settings in an earlier attempt but ended up on a fresh install of Windows after eventually ending up with a blue screen. The current install has the Controller software mentioned above.

Here is some more info that might be helpful:

Model Name 1: Z790 NOVA WIFI
Model Name 2: THUNDERBOLT 4 AIC R2.0
CPU: Intel(R) Core(TM) i9-14900K   3.20 GHz
Memory: 64.0 GB Crucial DDR5 Pro
GPU: Asus ROG Strix Pro (Removed for Troubleshooting)
Storage: 2X 1TB NVME M.2
OS: Windows 11 Pro (64-bit)

Please let me know if you need any more information.

Any help you can provide to allow my system to see my AIC would be greatly appreciated. I've seen a couple of posts from a few years ago by people who have solved this issue but I'm not seeing a solution that I can replicate.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote M440 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2024 at 3:48pm
it should work - it is the compatibility list. If the tb4 card is not faulty and asrock knows about the issues it should work with next mb bios update. BTW does it work in linux?

I too anticipate the need of installing USB controller, thats why i paid attention to the motherboard pcie lanes configuration and got a motherboard with pcie4x4 connected to the CPU.

looks like the intended slot for running the card in your case is:
Chipset:
- 1 x PCIe 4.0 x16 Slot (PCIE2), supports x4 mode*

I have my doubts if you will be able to archive pci3x4 speeds through this, but maybe intel cpu-chipset link is better than amd. I tried running NVME drive throught chipset and the speeds were infirior than when it was routed to the cpu.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 2H Media Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2024 at 4:10pm
Good questions. I agree that it should work, based on the list. That's why I'm holding out hope that I've missed something obvious.

Even if the speeds turn out to be limited, I will be satisfied with being able to use the card at all.

I'm hoping the hardware is okay. I have another of the same AIC I can test with but its intended for an identical system and I was hoping not to have to open it until I confirm that everything works as intended.

My hope is that this turns out to be a driver issue but I don't spend enough time in device manager to know what I should expect. Since Thunderbolt isn't showing up in Device Manager at all, I'm leaning towards a hardware or BIOS issue. I would expect a device with missing drivers to show up as an unknown device, which is not happening currently. However, I may be wrong in that assumption.

I'm sorry to say I can't comment on the Linux question. I've only tried it on Windows 11. One of my last-ditch troubleshooting efforts may be to attempt an install on Windows 10 but with Microsoft discontinuing support for Windows 10, I'm really hoping to get it working on Windows 11.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote M440 Quote  Post ReplyReply Direct Link To This Post Posted: 27 Jun 2024 at 10:44pm
Originally posted by 2H Media 2H Media wrote:

Good questions. I agree that it should work, based on the list. That's why I'm holding out hope that I've missed something obvious.

Even if the speeds turn out to be limited, I will be satisfied with being able to use the card at all.


IMO the card need to be placed in the particular slot i mentioned.

If you want to try the other PCIE slots, remove the nvme drive from M2_1 because those share lanes.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote 2H Media Quote  Post ReplyReply Direct Link To This Post Posted: 28 Jun 2024 at 1:00am
That's where it is now. Unfortunately, it's still not working. Also, I made sure to skip M2_1 when installing the NVME drives for exactly that reason. Thanks for the suggestions. Hopefully we can find something else to try.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 2H Media Quote  Post ReplyReply Direct Link To This Post Posted: 28 Jun 2024 at 1:33pm
It turns out I was the problem - I had the cables swapped on the AIC itself, since they have matching headers. The card is now appearing in windows and detects my Thinkpad TB4 docking station. Still not perfect - I haven't been able to detect my displays yet but at least I'm seeing the AIC now.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote M440 Quote  Post ReplyReply Direct Link To This Post Posted: 28 Jun 2024 at 11:04pm
very nice,

does it work it both slots we discussed?

how you got the cards? those are not available in my country in official distribution (im in EU)

the display is provided through the tb4 card displayport input

Edited by M440 - 28 Jun 2024 at 11:10pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 2H Media Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jul 2024 at 4:18am
After setting the card up in slot 2, I was able to transfer it to slot 1 and it still worked in slot 1.

I ended up giving up on using the card for display and am just using hdmi directly to my monitors from the gpu. I tried using the display port input on the thunderbolt card but it still didn't work. I suspect an issue is that neither of my monitors have a usb-c/thunderbolt input. One is hdmi and the other is display port. Both are connected to a Thinkpad TB4 dock. This configuration works on my Thinkpad laptop's TB4 port but didn't work through the TB4 ports on the AIC, even with the DP cable going from the GPU to the AIC. I suspect that going GPU > DP Cable > AIC > TB4 cable > TB4 Dock > hdmi/dp > monitor is failing because of an incompatibility somewhere along the line. At this stage, there are too many components and too few examples of people solving this issue for me to keep troubleshooting so I will likely just sell the AICs and move on.

I purchased the cards on ebay from a Japanese seller, as they are also not available anywhere here in Canada.
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