It's not "WiFi" as in "WLAN". The common thing is that the frequency of 2.4GHz is used, like for example with DECT phones too. But the protocol is non-standard so you have to use the dongle. Maybe you can try to use the dongle with h-e-n, but then you would probably still have a driver issue.

Btw: your question should have been worded different & more clearly then.