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* [https://download.virtualbox.org/virtualbox/ Versions files and extension packs]For an example since the test machine has VirtualBox version 7.0.14r161095 the file Oracle_VM_VirtualBox_Extension_Pack-7.0.14-161095.vbox-extpack was downloaded as it is an exact match. vboxmanage is used to install the extension pack... sudo vboxmanage extpack install Oracle_VM_VirtualBox_Extension_Pack-7.0.14-161095.vbox-extpack