Here is a link that will guide you in this endeavor. It will help you to find the right Wifi card for your system.

https://www.parts-people.com/index.php?action=category&id=140&subid=403&refine=wifi+card

I hope this helps!

We tried reaching you on a private message but did not receive a response. Please feel free to reply to the private message whenever you are available.

Welcome to the Dell Community @nimicitor 

May I suggest the Intel® Centrino® Advanced-N 6235, Dual Band:

Bands:            2.4 GHz/ 5GHz

Max Speed:    300 Mbps

Integrated Bluetooth:    Yes

https://ark.intel.com/content/www/us/en/ark/products/66890/intel-centrino-advanced-n-6235-dual-band.html

Intel 6235/6300/6250/6205/6200 WiFi Driver:

https://www.dell.com/support/home/en-us/drivers/driversdetails?driverid=3mnpt&oscode=w764&productcode=latitude-e5430

Best regards,

U2

Thanks for your reply, I've seen a Intel Wireless-AC 7260HMW for cheap and hope that it works ok in this machine.

Good luck @nimicitor 

Let us know if it works or not.

Regards,

U2