VirtualBox Extension Pack was introduced in Virtualbox as a new way to extend the functionality of the VirtualBox base package. Using the extension pack doesn't require a separate installation. The packs have a "vbox-extpack" file extension that's automatically handled by VirtualBox. To install it just close down any running Virtual Box instances and double-click on extension pack file and the tool will launch and install it for you, upgrading any earlier version of extension pack you might have.The current extension pack includes a USB 2.0 (EHCI) controller that allows you to get better performance from your USB 2.0 devices. To use it you'll have to enable the controller by hand and add filters for USB devices that you want to use this con... Read More »

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