Using this Shure MX890 wireless desktop base is easy. First, connect your MX405, MX410, or MX415 gooseneck microphone to the base. Make sure it's properly attached. Then, power on the base and set the frequency within the 470 - 494 MHz band. But remember, always check your country's wireless frequency laws before using it to avoid any legal issues. For maintenance, keep the base clean and dry. Wipe it gently with a soft cloth if it gets dirty. If you have any problems, refer to the user manual or contact Shure customer service.