How to work with COM port in virtual DOS (VirtualBox)?

Question

virtual box

1. Tell me who knows how to use the COM port in DOS in VirtualBox?
2. That is, if, for example, I connect a USB / COM converter on a host machine, then what settings should be in this case in DOS on a virtual machine? Or maybe there is some kind of universal driver?
3. Or maybe this can be done in Proxmax?

Answer 1

Can be used. You can both throw the converter itself into the VM, and the port that this converter will create.