i dont understand your question. if you have a minisforum ms-a2 then you should probably contact minisforum for compatible wifi cards that support wifi7. the ms-a2 states on the tech spec that it supports wifi6e, so i am wondering why you want to go with wifi7.
contact minisforum about the exact spec of the pcie 16x slot and then you can search for a compatible wifi7 pcie card.
i assume something like mt7925 might work or something like NCM865
The thing is, the card below has 6 antennas which is good enough for me:
Banana Pi BPI-R4 NIC BE14 WiFi 7 Module for BPI-R4 Wireless Tri-Band WiFi Router Board OpenWRT, MediaTek MT7995AV CPU 32 bits RISC-V MCU, with 6X 2G/5G/6GHz WiFi Antenna (WiFi7 NIC Module)
I tried using the onboard WiFi 6 card as a hotspot and the speeds I got on it was simply too slow. IRC, on my 1 Gbp/s fibre line I was getting around ~60-60 Mbp/s download.
And to answer your question, the reason I want to get WiFi 7 is because I’m thinking of upgrading my fibre line to +1 Gbp/s.