here is what I know about this product:
the base-unit uses Power over Ethernet, not USB-C
the wired microphone kit does not need a separate power supply it is powered from the base-unit
the wireless microphone(s) use a cradle for charging
this cradle uses an 18W (1 mic) or 36W (2 mic) usb-c adapter usb-c is a "standard" so you can use any adapter for this