I had to do a similar thing with my T530. I wanted to upgrade to a WiFi 6+Bluetooth card. The built in Bluetooth adapter is very old, I think v4.2. It's also a finicky module with a mezzanine connector, and it's nestled deeply into the internal magnesium frame so the range is abysmal. I reflashed the BIOS to kill the whitelist, but I'm left with a bigger problem. The WiFi slot offers PCI, but not USB. The WWAN slot has USB, but not PCI. I ended up tapping into the original Bluetooth connector to steal the USB lines and route them back to the PCI connector. I had some issues at first with the device not enumerating reliably, but it eventually settled down. Now I have WiFi 6 and Bluetooth 5. Unfortunately the WiFi frontend is extremely bad (it's a Chinese knockoff) and I have pretty bad signal strength even literally on top of the router. But it works well enough and my Bluetooth headphones now work more than 10ft away from the machine. The major problem is that the only WiFi 6 card available in mini PCIe is knockoff Intel AX210 cards. I suppose that's fair, mPCIe is basically obsolete these days. Unfortunately I don't have space for a M.2 or other adapter. Maybe I could build a custom express card
Doesn’t like it
The ax210 does work in the ryzen motherboard but just ok. I had persistent errors relating to the card in dmesg and occasional disconnects. The wifi that ships with the ryzen framework is made by MediaTek, not Realtek, and it's been working smoothly since I installed it.
Likes it
Anecdote: My employer recently bought me a Lenovo Legion 5 Pro. Due to concussions and general flicker sensitivity, I don't do well with 60Hz screens, and I prefer AMD CPUs. This one came with a 240Hz screen. Overkill! But... Bluetooth was unreliable. Every few hours, it vanished from Windows as if it didn't exist. A moment of sleep and wake was enough to bring it back, but it was still annoying to lose mouse and headphones unexpectedly. Two support calls, but all they did was reinstall a bunch of the driver updates I had already reinstalled (and they installed Geforce Experience because Vantage said it was available.) Unsurprisingly, none of that fixed the issue. The next step was a factory reset and/or replacement, which would've been a big PITA because of time I already spent doing setup. And it still might not have solved the issue. Instead, I spent $23 on an Intel AX210 WLAN/Bluetooth chip, and performed the replacement (of a Realtek chip) in well under 10 minutes. Taking off the bottom panel was relatively easy, and I did not see any damaged clips. M.2 and SODIMM chips are readily replaceable, and so was this WLAN chip. It also fixed my problem completely without resorting to losing a lot of time repeating my setup. If there's a point, it's that budget and mid-range gaming laptops are often quite repairable, where as thin and light / ultrabooks, especially those made for businesses are much less frequently repairable. I think the reason is two-fold... in general busines…
Doesn’t like it
I've been using an AX210 on a Ryzen based laptop since early 2022. I initially had issues with it causing the laptop to lockup hard, if iwlwifi module (AX210 driver) was loaded, on resume from suspend to disk. It was easy to work around using a hook script to down the interface and unload the module before suspend, and reload + up interface if it had been up at time of suspend. S3 suspend to ram / resume worked fine without the hack. Currently 6.1 kernel (Debian testing). When I initially put the work around in place it was IIRC 5.6 kernel, so maybe not an issue anymore, but haven't bothered checking to see. I only bought an Intel AX210 because it was cheapest tri-band card. The Intel card is pretty gimped (broken AP modes, breakage due to issues "magically" determining regulatory domain, Intel removed functionality in recent driver versions that could somewhat work around the first two issues so now impossible to mitigate, etc.). I would probably try a Mediatek card, if doing this today (in spite of my general policy of avoiding Mediatek). Last I checked, the equivalent Atheros chipset still had poor free driver support?!
Doesn’t like it
I can only speak for myself here, but I'm running a MediaTek MT7921 on Fedora 37, I picked it up on eBay for £12 and its been spot on. Unlike my Intel AX210 I can actually get a full gigabit down sat next to my router.
Likes it
It's interesting you had problems with the AX200 chip, I bought one for my X13 specifically because it has good kernel drivers. On Ubuntu, there's a "hardware enablement kernel" package, linux-generic-hwe-22.04, that's just the kernel from the latest Ubuntu back-ported to the LTS version. I find it tends to fix most issues with newer hardware. Maybe PopOS has something similar? Anyways, I found the MIMO in wifi 6 was better enough that I even upgraded another old laptop I have with an AX210 I found for $14.