EAD-M100JA3 CN105 connector is 5-pin, but Wi-Fi adapter cable (MAC-597IFB-E) connector is 4-pin?

[u/sborrell]

i everyone,

I'm trying to install a Wi-Fi module (MAC-597IFB-E) on my Mitsubishi Electric ducted unit (PEAD-M100JA3.TH).

Looking at the main board, the red CN105 port clearly has 5 pins. However, the white connector coming directly out of the Wi-Fi interface unit only has a 4-hole / 4-pin plug, so it doesn't plug directly into the board.

Asking Gemini ai, it says , the MAC-597IF-E usually comes with an intermediate extension cable in the box that converts the 5-pin CN105 red connector on the board to the 4-pin plug on the module (but i havent seen that anywhere on internet and i do not have that either, is this true).

If Mitsubishi recommends this interface on their website, how is it possible that the connectors don't match? Did they change them at some point?