Installing on Ubuntu Server

There are two paths; using the Ubuntu Packaged Version, or the Oracle Packaged Version. Below is the Oracle way;

Follow the Debian process here:

You need the extension pack for full Headless support and USB

Copy the link from the, it will be something like

sudo vboxmanage extpack install Oracle_VM_VirtualBox_Extension_Pack-4.3.4-91027.vbox-extpack