You need the older mini PCIe (not the now common M.2) format -- there are some wifi-6 cards in this format (but not from Intel -- all the Intel cards are M.2 and won't fit).

https://www.amazon.com/MPE-AX3000H-802-11ac-Wireless-Express-Network/dp/B091FJXQHH

there are also some mini-PCie to M.2 adapters that will allow you to use an M.2 card like the Intel AX200 (but not the AX201, which won't work with your system; it requires a 10th generation or newer CPU).

https://www.newegg.com/fenvi-mini-pci-e-wifi-6-mini-pci-express/p/0XM-00JK-00089

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Thank you for responding!   I have looked at those but the issue I see is I don’t have enough room for anything bigger than the mPCie card.  Any help is greatly appreciated.  

Hi there, 

I am facing same issue with mine laptop can I ask have you found the solution?

Hi @ejn63​  I have the same Dell P57G = Inspiron 13 7347, Also I have the problem with bluetooth module (wifi car) and need replace / upgrade with other ... and then I prefer chose an Wifi 6 Intel. Reading his specification on this manual https://dl.dell.com/manuals/all-products/esuprt_laptop/esuprt_inspiron_laptop/inspiron-13-7347-laptop_reference%20guide_en-us.pdf say in page 12 than "have One M.2 card slot for WiFi and Bluetooth combo card". 

I would be sure what's the correct format for this wifi card? Somebody can answer this question ?

Thank in advanced !!!

This is a totally different system from the one in this thread.  It does have an M.2 (Aka NGFF) slot.  You can use something like the Intel AX200 card (but NOT the AX201;  the CPU is too old).