Just a quick video on how to make the connections.

Disclaimer: This is a unsupported feature use at your own risk.

Only USB 2.0 devices are supported by the Montage / MODX.

What worked for me:
Dell 21.5 inch S2240T Touch Screen Monitor
Hewlett Packard NL571AA USB to VGA adapter
Powered 4 port USB 2.0 Hub.