More About The Interface MK3-USB (VE.Bus to USB)
Victron Energy Interface MK3-USB (VE.Bus to USB)
Use the MK3-USB to connect Multiplus or Quattro inverter/chargers to a computer for configuration. Also works for Phoenix inverters with a VE.Bus port.
Detailed information from the manufacturer
https://www.victronenergy.com/accessories/interface-mk3-usb