VirtualBox: USB2.0

If you want to enable usb 2.0 in your vbox, you should install Oracle extension pack:

# wget http://download.virtualbox.org/virtualbox/4.1.6/Oracle_VM_VirtualBox_Extension_Pack-4.1.6-74713.vbox-extpack

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# VBoxManage extpack install

Oracle_VM_VirtualBox_Extension_Pack-4.1.6-74713.vbox-extpack

after you should enable usb in virtual machine settings.

PS: Apple devices needs in usb 2.0 !