B590: replace internal wi-fi with different chipset?

I have a Thinkpad B590 which came with a Broadcom 4313 wireless chipset. This wireless works fine - under Windows. Unfortunately, I'd like to (also) run a different OS (OpenBSD) on this laptop, which does not have support for this chipset.
I see the wireless chipset is field-replaceable; is it possible to replace the chipset with another half-height mini-PCIe wireless adapter? If the BIOS does not allow me to put in an arbitrary adapter, can I replace the chipset with the Intel one that ships on some other B590 models?
I am aware that external wi-fi adapters exist; for various reasons, that's not a great solution for me.
Thanks!
Solved!
Go to Solution.

hi JoachimSchipper,
Welcome to Lenovo Community Forums!
This is a list of Shipped WLAN for Lenovo B590 found here in you system's Maintenance Manual
WLAN (FRU) on this list are the only compatible parts for B590 Due to a BIOS whitelist restriction.
Check online resellers for These parts and make sure they have a Lenovo FRU Tag like the one here
http://www.ebay.com/itm/IBM-LENOVO-FRU-04W3765-INTEL-2230-WIRELESS-N-WIFI-MINICARD-LC-20200078-4W376...
Hope this helps
Cheers!
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****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
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Difficulties replacing some BC functionality with XI (refer to example)
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Link to picture
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Link to picture
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