Yes !
Choose the appropriate input: On the DJM-900 nexus, locate the microphone inputs. These are usually located on the front or top panel of the console.

Connect the microphone: Use an XLR or jack cable, depending on the type of connection supported by your microphone. Plug one end of the cable into the microphone and the other into the console's microphone input.

Adjust levels: On the console, use the gain or level controls to adjust microphone volume. Make sure the level is high enough to be heard, but not so high as to cause distortion.

Check the configuration: On the DJM-900 nexus, make sure that the microphone input is selected as the appropriate audio source for the mix. Use the input selection buttons to choose the channel to which your microphone is connected.