Usb midi out on palette 62

hi!
i have a question about the usb port on the palette 62 cases. the manual states it’s only a midi in port, but as far as i know, usb is bi-directional, so it confuses me a little…

i have searched the forum and manual and not found a clear answer to this, except for the stating of the fact that it is an input only. i would like to know why, and if there’s a work around.

for instance, plum audio makes these 1u ornament and crime modules that comes with an usb adapter for the palette. would it allow me to use the cv to midi mode in captain midi?

thanks!