A standard dynamic 3-pin XLR type microphone can be directly connected to the dB-9 connector of an FOR-22 but the FOR-22 level input control and port input settings in software may not provide a useable audio level to properly drive the audio input to the Matrix frame.  To get the mic output to line level it might be necessary to bump up the mic output via a mic preamp in order to boost the level up to balanced line level of 0dBu needed by the FOR-22 input. 
Rane Corp mic preamp with XLR connectors, model # NM 1
Radio Design Labs stick on mic preamp with terminal block wiring, model # STM-1(screen shot below of the STM-1)