It depends on what ports your screens have.
If you have HDMI, a microHDMI to HDMI cable is sufficient.
One of those, for example.
With Displayport / DVI you can also use the USB-C output. But then you need the appropriate cable.
A multiport adapter is also possible.
There are also USB-C hubs with graphics outputs, which also ensure the power supply of the UbookX. You then need a USB-PD power supply unit with 65 watts.