Thunderbolt correctly installed or not?

I've just added a thunderbolt card to my set up - Gigabyte Alpine Ridge. I have gone into the bios and turned on the thunderbolt option, and assigned the PCI port that I have installed the card on. However when I boot into windows, device manager does not show the thunderbolt card, and the thunderbolt device im trying to connect to my PC is not detected. I have updated the bios to latest version.

Case
FRACTAL DEFINE R6 BLACK QUIET MID-TOWER CASE
Overclocked CPU
Overclocked Intel® Core™ i9-9940X 14 Core (3.30GHz @ up to 4.4GHz)
Motherboard
ASUS® PRIME X299-A: ATX, USB 3.1, SATA 6 GB/s, RGB Ready
Memory (RAM)
64GB Corsair VENGEANCE DDR4 2666MHz (4 x 16GB)
Graphics Card
11GB NVIDIA GEFORCE RTX 2080 Ti - HDMI, 3x DP GeForce - RTX VR Ready!
1st Storage Drive
240GB ADATA SU630 2.5" SSD, SATA 6 Gb (520MB/R, 450MB/W)
1st Storage Drive
2TB SEAGATE BARRACUDA 2.5" SSD, (up to 560MB/sR | 540MB/sW)
1st Storage Drive
6TB SEAGATE BARRACUDA PRO 3.5", 7200 RPM 256MB CACHE
Power Supply
CORSAIR 850W RMx SERIES™ MODULAR 80 PLUS® GOLD, ULTRA QUIET
Power Cable
1 x 1 Metre UK Power Cable (Kettle Lead)
Processor Cooling
Corsair H100x Hydro Cooler w/ PCS Ultra Quiet Fans
Thermal Paste
COOLER MASTER MASTERGEL MAKER THERMAL COMPOUND
Sound Card
ONBOARD 8 CHANNEL (7.1) HIGH DEF AUDIO (AS STANDARD) (External ASIO soundcard)
USB/Thunderbolt Options
2 PORT (2 x TYPE A) USB 3.1 PCI-E CARD + STANDARD USB PORTS
Firewire
2 Port IEEE 1394a Firewire PCI-E Card (2 x 6 pin) (REMOVED)
Operating System
Windows 10 Professional 64 Bit
Operating System Language
United Kingdom - English Language
Windows Recovery Media
Windows 10 Multi-Language Recovery Image - Unlimited Downloads from Online Account
Anti-Virus
Windows Defender
Monitor
MSI 31.5" Optix MAG322CQRV - 2560 x 1440, 1MS, 144Hz
Keyboard & Mouse
Viper V65, Razor Deathadder Elite
 

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Have you got a link to the add on card you’re using?

A gigabyte add on card won’t work with an ASUS board, you’d have to use the EX3 thunderbolt card which is compatible I think.

They’re not generic cards with open compatibility, the only work with a subset of boards from the same manufacturer.

So you’d need to use the ASUS TR3 card which supports this board:


 
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Also, just remembered, there are settings in the bios that specifically name the card. (enabling didnt seem to do anything though)

These are present, even though I have taken the card out for now:

Alpine Ridge XHCI WA - enabled
AR XCHI Host prewake - enabled
AR XCHI Host active LTR - 20
AR XCHI Host High LTR - 80
AR XCHI Host medium LTR - 40
AR XCHI Host low LTR - 30

NB - im not using the thunderbolt for monitors
 
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Care to share?
From PC Specialist - Switch *all* the options to on.

There were a few options I had not enabled in the bios - While I had turned on the TB, and the Alpine Ridge stuff, there were still a few options I had not switched on (which were for standard TB, not the Alpine Ridge specific - but Asus documentation is pretty bad, so didnt say what even half of any of the TB options were for, and google was a bit weak on figuring many of them out).

I also installed the drivers before installing the card. (Previously I had done it the other way around)

It probably hadn't helped (and probably unrelated, I dont know) that the PCIEX lane I had installed the card originally on disabled one set of SATA connectors which had been in use, so I swapped the hard disk too.
 
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