The wifi kit I used contained the USB Wi-Fi stick (probably identical to the ductless wifi kit KSAIF0301AAA), a controller hub that you plug the USB stick which goes between the programmable controller and the indoor unit, and remote.
40MAQ is the ductless model, which includes the controller hub so you should have the USB slot behind the face door.
My ductless senville units came with the USB stick to plug to the unit.
Use the Midea Air app to add the unit. Make sure the unit is in AP mode.
I got a second Midea Ducted unit in the basement now 2 senville ductless units all available on the Midea app and on Google Home.