Foscam and Blueiris using microphone

I am wondering if there is anyone out there using a Foscam camera with a microphone attached. I have a Foscam G4 camera hooked up with Blueiris that I would like to purchase/install an audio microphone to capture audio. There is what looks like a female jack on the camera for audio input, can I just put a microphone into that? The manual for the camera states this, which I thought was kind of strange and I don’t understand it.

“Audio input interface The jack is used to plug external input device such as sound pick up device directly. Here microphone cannot directly insert to the interface, it must connect to adapter first.”