[gentoo-user] OT: looking for info on USB3 to Mini-pcie WiFi module

[William Kenworthy]

Hi all,

    I am looking for info on usb3 to mini-pcie wifi modules - some kind
of adaptor?  There are a lot of mini-pcie to M.2 on ebay but reading up
on mini-pcie it seems they may not be compatible.  Does anybody have an
idea of one that would work - they are cheap enough to buy and
test/throw back on shelf if they dont work but the current two month
delivery times are a killer :)

My existing wifi AP is getting too old to properly upgrade (Its an old
Buffalo G300N running openwrt) so I am building my own - I currently
have a gentoo based userland on a raspberry-pi3B using the inbuilt wifi
and a realtek usb WiFi 1200ac dongle which is the proof of concept but
before I go and purchase more powerful hardware for the controller
(looking at an odroid C4 at the moment) I want to ascertain if I can use
some of the mini-pcie wifi cards I have via USB3 (one is a 3x3 mimo
atheros ac module, others atheros or intel N.)  At the end of the day, I
am looking for WiFi6 compatibility and a performance boost over the old
buffalo (multiple family members are working from home, mostly via wifi
which is holding up pretty well so far but I want better :)  Yes I could
by a bespoke unit but whats the fun in that :)

BillK